Carisoprodol interactions

Carisoprodol (Soma), a muscle relaxant has 259 documented interactions across the FDA labels and fact sheets we index: 85 major, 164 moderate, 8 minor, and 2 where a label reports no significant interaction. Each entry below quotes the sentence behind it. This drug page is a starting point, not a verdict for your situation.

What Carisoprodol looks like

All 19 versions
Carisoprodol 250 mg tablet: white, round, 10 mm, imprinted SOMA on one side and 250 on the other.
SOMA / 250
250 mg · white · round · 10 mm
Viatris Specialty
Carisoprodol 350 mg tablet: white, round, 12 mm, imprinted SOMA on one side and 350 on the other.
SOMA / 350
350 mg · white · round · 12 mm
Viatris Specialty
Carisoprodol 350 mg tablet: white, round, 12 mm, imprinted SG on one side and 109 on the other.
SG / 109
350 mg · white · round · 12 mm
ScieGen
Carisoprodol 350 mg tablet: white, round, 5 mm, imprinted CL on one side and 022 on the other.
CL / 022
350 mg · white · round · 5 mm
Ingenus

Renderings from the FDA labels' product listings: color, shape, size, and imprint. 19 documented versions from 21 labelers.

Interactions from the label

Major interactions (85)

  • Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Acetaminophen and codeine label, Boxed warning)

  • AlcoholAlcoholMajor

    Combining alcohol with sedating medicines (opioids, benzodiazepines, sleep medicines, muscle relaxants) can cause dangerous drowsiness, slowed breathing, and overdose. (NIAAA, Harmful Interactions: Mixing Alcohol with Medicines)

  • AlprazolambenzodiazepineMajor

    • Effects on Driving and Operating Machinery: Patients receiving • alprazolam XR should be cautioned against operating machinery or driving a motor vehicle, as well as avoiding concomitant use of alcohol and other central nervous system (CNS) depressant drugs. (Alprazolam label, Warnings and precautions)

  • Azelastine and fluticasoneantihistamineMajor

    • Avoid concurrent use of alcohol or other central nervous system (CNS) depressants with azelastine hydrochloride and fluticasone propionate nasal spray because further decreased alertness and impairment of CNS performance may occur. (Azelastine and fluticasone label, Warnings and precautions)

  • …AND MISUSE; LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL EXPOSURE; NEONATAL OPIOD WITHDRAWAL SYNDROME; and RISKS FROM CONCOMITANT USE WITH ALCOHOL, BENZODIAZEPINES OR OTHER CNS DEPRESSANTS Addiction, Abuse, and Misuse Belladonna and opium suppositories expose patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to… (Belladonna and opium label, Boxed warning)

  • BuprenorphineopioidMajor

    Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Buprenorphine label, Boxed warning)

  • Examples: phenelzine, tranylcypromine, linezolid Muscle Relaxants Clinical Impact: Buprenorphine may enhance the neuromuscular blocking action of skeletal muscle relaxants and produce an increased degree of respiratory depression. (Buprenorphine and naloxone label, Drug interactions)

  • Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Butalbital, acetaminophen, caffeine, and codeine label, Boxed warning)

  • Concomitant use of opioids or a barbiturate with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Butalbital, aspirin, caffeine, and codeine label, Boxed warning)

  • ButorphanolopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Butorphanol label, Boxed warning)

  • CarbamazepineanticonvulsantMajor

    CNS Depressants The concomitant use of EQUETRO and other CNS depressants can increase the risk of respiratory depression, profound sedation, hypotension, and syncope. (Carbamazepine label, Drug interactions)

  • CarbinoxamineantihistamineMajor

    Avoid concurrent use of Carbinoxamine Maleate Extended-Release Oral Suspension with alcohol or other central nervous system depressants because additional impairment of central nervous system performance may occur. (Carbinoxamine label, Warnings and precautions)

  • CetirizineantihistamineMajor

    Avoid concurrent use of QUZYTTIR with alcohol or other CNS depressants because additional reduction in alertness and additional impairment of CNS performance may occur. (Cetirizine label, Warnings and precautions)

  • ChlordiazepoxidebenzodiazepineMajor

    Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. (Chlordiazepoxide label, Warnings)

  • Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. (Chlordiazepoxide and clidinium label, Warnings)

  • ChlorpromazineantipsychoticMajor

    Do not use in comatose states or in the presence of large amounts of central nervous system depressants (alcohol, barbiturates, narcotics, etc.). (Chlorpromazine label, Contraindications)

  • CiprofloxacinfluoroquinoloneMajor

    Table 8: Drugs That are Affected by and Affecting Ciprofloxacin Drugs That are Affected by Ciprofloxacin Drug(s) Recommendation Comments Tizanidine Contraindicated Concomitant administration of tizanidine and ciprofloxacin is contraindicated due to the potentiation of hypotensive and sedative effects of tizanidine [see Contraindications ( 4.2 )]. (Ciprofloxacin label, Drug interactions)

  • ClobazambenzodiazepineMajor

    Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. (Clobazam label, Warnings and precautions)

  • ClonazepambenzodiazepineMajor

    Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. (Clonazepam label, Warnings)

  • Clonidinealpha-adrenergic agonistMajor

    Avoid use with other central nervous system (CNS) depressants ( 5.3 ) (Clonidine label, Warnings and precautions)

  • ClorazepatebenzodiazepineMajor

    Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. (Clorazepate label, Warnings)

  • CodeineopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Codeine label, Boxed warning)

  • Cyclobenzaprinemuscle relaxantMajor

    Based on its structural similarity to TCAs, concomitant use of TONMYA with: MAO inhibitors may be life-threatening [see Contraindications (4) ] , Alcohol, barbiturates, and other CNS depressants may increase the risk of adverse reactions associated with these drugs, Tramadol may increase the seizure risk, Guanethidine or other similar acting drugs may block the… (Cyclobenzaprine label, Drug interactions)

  • DarunavirantiretroviralMajor

    …elbasvir/grazoprevir Lipid modifying agents: lomitapide, lovastatin, simvastatin Opioid Antagonist: naloxegol PDE-5 inhibitor: sildenafil when used for treatment of pulmonary arterial hypertension Sedatives/hypnotics: orally administered midazolam, triazolam Co-administration of PREZISTA/ritonavir is contraindicated with drugs that are highly dependent on CYP3A for clearance… (Darunavir label, Contraindications)

  • Darunavir and cobicistatantiretroviralMajor

    …elbasvir/grazoprevir Lipid modifying agents: lomitapide, lovastatin, simvastatin Opioid Antagonist: naloxegol PDE-5 inhibitor: sildenafil when used for treatment of pulmonary arterial hypertension Sedatives/hypnotics: orally administered midazolam, triazolam PREZCOBIX or PREZCOBIX PED is contraindicated in patients receiving certain co-administered drugs for which altered plasma… (Darunavir and cobicistat label, Contraindications)

  • DiazepambenzodiazepineMajor

    Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. (Diazepam label, Warnings)

  • CONTRAINDICATIONS Diphenoxylate hydrochloride and atropine sulfate is contraindicated in: • Pediatric patients less than 6 years of age due to the risks of respiratory and central nervous system (CNS) depression (see WARNINGS ). (Diphenoxylate and atropine label, Contraindications)

  • Doxylamine and pyridoxineantihistamineMajor

    Central nervous system (CNS) depressants: Concurrent use with alcohol or other CNS depressants is not recommended ( 5.1 ) (Doxylamine and pyridoxine label, Warnings and precautions)

  • …Lipid-modifying Agents: lomitapide, lovastatin, simvastatin Phosphodiesterase-5 (PDE-5) Inhibitor: sildenafil when administered as REVATIO ® for the treatment of pulmonary arterial hypertension Sedative/hypnotics: triazolam, orally administered midazolam Coadministration of GENVOYA is contraindicated with drugs that: Are highly dependent on CYP3A for clearance and for which… (Elvitegravir, cobicistat, emtricitabine, and tenofovir label, Contraindications)

  • EstazolambenzodiazepineMajor

    Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. (Estazolam label, Warnings)

  • Eszopiclonesedative-hypnoticMajor

    The use of LUNESTA with other sedative-hypnotics at bedtime or the middle of the night is not recommended. (Eszopiclone label, Warnings and precautions)

  • FentanylopioidMajor

    • Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Fentanyl label, Boxed warning)

  • FosamprenavirantiretroviralMajor

    …Hypericum perforatum ) Lipid modifying agents: Lomitapide, lovastatin, simvastatin Non-nucleoside reverse transcriptase inhibitor: Delavirdine PDE5 inhibitor: Sildenafil (Revatio) (for treatment of pulmonary arterial hypertension) Sedative/hypnotics: Midazolam, triazolam Hypersensitivity to fosamprenavir calcium or amprenavir (e.g., Stevens-Johnson syndrome). (Fosamprenavir label, Contraindications)

  • GabapentinanticonvulsantMajor

    • Respiratory Depression: May occur with NEURONTIN when used with concomitant central nervous system (CNS) depressants, including opioids, or in the setting of underlying respiratory impairment. (Gabapentin label, Warnings and precautions)

  • HydrocodoneopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Hydrocodone label, Boxed warning)

  • Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Hydrocodone and acetaminophen label, Boxed warning)

  • …ABUSE, AND MISUSE; LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; MEDICATION ERRORS; CYTOCHROME P450 3A4 INTERACTION; CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS; INTERACTION WITH ALCOHOL; NEONATAL OPIOID WITHDRAWAL SYNDROME WARNING: ADDICTION, ABUSE, AND MISUSE; LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION;… (Hydrocodone and chlorpheniramine label, Boxed warning)

  • …ABUSE, AND MISUSE; LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; MEDICATION ERRORS; CYTOCHROME P450 3A4 INTERACTION; CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS; INTERACTION WITH ALCOHOL; NEONATAL OPIOID WITHDRAWAL SYNDROME Addiction, Abuse, and Misuse Hydrocodone bitartrate and homatropine methylbromide exposes patients and… (Hydrocodone and homatropine label, Boxed warning)

  • …LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; NEONATAL OPIOID WITHDRAWAL SYNDROME; CYTOCHROME P4503A4 INTERACTION; RISKS FROM CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS; and SERIOUS CARDIOVASCULAR AND GASTROINTESTINAL EVENTS WARNING: SERIOUS AND LIFE-THREATENING RISKS FROM USE OF HYDROCODONE BITARTRATE AND IBUPROFEN TABLETS Addiction,… (Hydrocodone and ibuprofen label, Boxed warning)

  • HydromorphoneopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death . (Hydromorphone label, Boxed warning)

  • HydroxyzineantihistamineMajor

    Rarely, cardiac arrests and death have been reported in association with the combined use of hydroxyzine hydrochloride intramuscularly and other CNS depressants. (Hydroxyzine label, Precautions)

  • KetamineCNS depressantMajor

    Benzodiazepines, Opioid Analgesics, or other CNS Depressants : Concomitant use may result in profound sedation, respiratory depression, coma, or death. (Ketamine label, Drug interactions)

  • Ketoconazoleazole antifungalMajor

    This may potentiate and prolong hypnotic and sedative effects, especially with repeated dosing or chronic administration of these agents. (Ketoconazole label, Contraindications)

  • LevocetirizineantihistamineMajor

    Avoid concurrent use of alcohol or other central nervous system depressants with XYZAL. (Levocetirizine label, Warnings and precautions)

  • LevorphanolopioidMajor

    Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Levorphanol label, Boxed warning)

  • Lopinavir and ritonavirantiretroviralMajor

    …Non-opioid Analgesic (selective blocker of Nav1.8 sodium channels): suzetrigine PDE5 Inhibitor: sildenafil (Revatio ® ) when used for the treatment of pulmonary arterial hypertension Sedative/Hypnotics: triazolam, orally administered midazolam KALETRA is contraindicated with drugs that are potent CYP3A inducers where significantly reduced lopinavir plasma concentrations… (Lopinavir and ritonavir label, Contraindications)

  • LorazepambenzodiazepineMajor

    Caution patients receiving LOREEV XR against operating machinery or driving a motor vehicle as well to avoid the concomitant use of alcohol and other CNS depressant drugs during treatment ( 5.4 , 7 ) (Lorazepam label, Warnings and precautions)

  • MeperidineopioidMajor

    Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Meperidine label, Boxed warning)

  • MeprobamateCNS depressantMajor

    Carisoprodol tablets are contraindicated in patients with a history of acute intermittent porphyria or a hypersensitivity reaction to a carbamate such as meprobamate. (Carisoprodol label, Contraindications)

  • Metaxalonemuscle relaxantMajor

    If concomitant use with another CNS depressant is warranted, closely monitor for signs of respiratory depression and sedation, particularly during treatment initiation and dosage increases. (Metaxalone label, Warnings and precautions)

  • MethadoneopioidMajor

    Managing Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, is a risk factor for respiratory depression and death [see Warnings and Precautions ( 5.2 )]. (Methadone label, Boxed warning)

  • MidazolambenzodiazepineMajor

    WARNING: PERSONNEL AND EQUIPMENT FOR MONITORING AND RESUSCITATION AND RISKS FROM CONCOMITANT USE WITH OPIOID ANALGESICS AND OTHER SEDATIVE-HYPNOTICS Personnel and Equipment for Monitoring and Resuscitation Only personnel trained in the administration of procedural sedation, and not involved in the conduct of the diagnostic or therapeutic procedure, should administer… (Midazolam label, Boxed warning)

  • MorphineopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Morphine label, Boxed warning)

  • NalbuphineopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Nalbuphine label, Boxed warning)

  • Nalmefeneopioid antagonistMajor

    Risk of Recurrent Respiratory and CNS Depression : A recurrence of respiratory depression is possible, therefore, keep the patient under continued surveillance and administer repeat doses of ZURNAI using a new auto-injector with each dose while awaiting emergency medical assistance. (Nalmefene label, Warnings and precautions)

  • Neostigminecholinesterase inhibitorMajor

    Depolarizing Muscle Relaxants Use of neostigmine to reverse the effects of depolarizing muscle relaxants such as succinylcholine is not recommended, because it may prolong the phase-1 block. (Neostigmine label, Drug interactions)

  • …(selective blocker of Na v 1.8 sodium channels): suzetrigine • Opioid antagonists: naloxegol • PDE5 inhibitor: sildenafil (Revatio ® ) when used for pulmonary arterial hypertension (PAH) • Sedative/hypnotics: triazolam, oral midazolam • Serotonin receptor 1A agonist/serotonin receptor 2A antagonist: flibanserin • Vasopressin receptor antagonists: tolvaptan ➢ Drugs that… (Nirmatrelvir and ritonavir label, Contraindications)

  • OliceridineopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Oliceridine label, Boxed warning)

  • OlopatadineantihistamineMajor

    • Avoid concurrent use of alcohol or other central nervous system depressants with olopatadine hydrochloride nasal solution (nasal spray) ( 5.2 ). (Olopatadine label, Warnings and precautions)

  • Olopatadine and mometasoneantihistamineMajor

    • Avoid concurrent use of alcohol or other central nervous system (CNS) depressants with RYALTRIS because additional reductions in alertness and additional impairment of CNS performance may occur. (Olopatadine and mometasone label, Warnings and precautions)

  • OxazepambenzodiazepineMajor

    Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. (Oxazepam label, Warnings)

  • OxycodoneopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Oxycodone label, Boxed warning)

  • …LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; NEONATAL OPIOID WITHDRAWAL SYNDROME; CYTOCHROME P450 3A4 INTERACTION; and RISKS FROM CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS Addiction, Abuse, and Misuse Oxycodone hydrochloride tablets exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to… (Oxycodone and acetaminophen label, Boxed warning)

  • OxymorphoneopioidMajor

    Risks From Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Oxymorphone label, Boxed warning)

  • …MITIGATION STRATEGY (REMS); LIFE-THREATENING RESPIRATORY DEPRESSION; ACCIDENTAL INGESTION; NEONATAL OPIOID WITHDRAWAL SYNDROME; and RISKS FROM CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS Addiction, Abuse, and Misuse Pentazocine and Naloxone Tablets exposes patients and other users to the risks of opioid addiction, abuse, and misuse, which can lead to… (Pentazocine and naloxone label, Boxed warning)

  • PerphenazineantipsychoticMajor

    CONTRAINDICATIONS Perphenazine products are contraindicated in comatose or greatly obtunded patients and in patients receiving large doses of central nervous system depressants (barbiturates, alcohol, narcotics, analgesics, or antihistamines); in the presence of existing blood dyscrasias, bone marrow depression, or liver damage; and in patients who have shown… (Perphenazine label, Contraindications)

  • PhenelzineMAO inhibitorMajor

    Phenelzine sulfate should not be used in combination with dextromethorphan or with CNS depressants such as alcohol and certain narcotics. (Phenelzine label, Contraindications)

  • PhenobarbitalbarbiturateMajor

    CNS depressants: Closely monitor for sedation and respiratory depression. (Phenobarbital label, Drug interactions)

  • Physostigminecholinesterase inhibitorMajor

    …obstruction, spasms in the urinary tract collection system, inactivation of nerve and muscle cells after administration of drugs to relax the muscles (depolarization block after depolarizing muscle relaxants), in case of intoxication due to “irreversibly acting” cholinesterase inhibitors (drugs used to treat dementia), intoxication with phosphoric acid esters or barbiturates. (Physostigmine label, Contraindications)

  • Polymyxin BantibioticMajor

    THE NEUROTOXICITY OF POLYMYXIN B SULFATE CAN RESULT IN RESPIRATORY PARALYSIS FROM NEUROMUSCULAR BLOCKADE, ESPECIALLY WHEN THE DRUG IS GIVEN SOON AFTER ANESTHESIA AND/OR MUSCLE RELAXANTS. (Polymyxin B label, Boxed warning)

  • PregabalinanticonvulsantMajor

    • Respiratory Depression : May occur with LYRICA when used with concomitant CNS depressants or in the setting of underlying respiratory impairment. (Pregabalin label, Warnings and precautions)

  • ProchlorperazineantipsychoticMajor

    Do not use in comatose states or in the presence of large amounts of central nervous system depressants (alcohol, barbiturates, narcotics, etc.). Do not use in pediatric surgery. (Prochlorperazine label, Contraindications)

  • …PROMETHAZINE AND RESPIRATORY DEPRESSION IN CHILDREN; MEDICATION ERRORS; INTERACTIONS WITH DRUGS AFFECTING CYTOCHROME P450 ISOENZYMES; CONCOMITANT USE WITH BENZODIAZEPINES OR OTHER CNS DEPRESSANTS; NEONATAL OPIOID WITHDRAWAL SYNDROME Addiction, Abuse, and Misuse Promethazine HCl and Codeine Phosphate Oral Solution exposes patients and other users to the risks… (Promethazine and codeine label, Boxed warning)

  • RemifentanilopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Remifentanil label, Boxed warning)

  • RitonavirantiretroviralMajor

    WARNING: DRUG-DRUG INTERACTIONS LEADING TO POTENTIALLY SERIOUS AND/OR LIFE THREATENING REACTIONS Co-administration of NORVIR with several classes of drugs including sedative hypnotics, antiarrhythmics, or ergot alkaloid preparations may result in potentially serious and/or life-threatening adverse events due to possible effects of NORVIR on the hepatic metabolism… (Ritonavir label, Boxed warning)

  • SelegilineMAO inhibitorMajor

    John’s wort or cyclobenzaprine (a tricyclic muscle relaxant). (Selegiline label, Contraindications)

  • Sodium oxybateCNS depressantMajor

    • Central Nervous System Depression Xyrem (sodium oxybate) is a CNS depressant. (Sodium oxybate label, Boxed warning)

  • TapentadolopioidMajor

    Risks From Concomitant Use With Benzodiazepines Or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Tapentadol label, Boxed warning)

  • TemazepambenzodiazepineMajor

    Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug. (Temazepam label, Warnings)

  • TramadolopioidMajor

    Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Tramadol label, Boxed warning)

  • Risks from Concomitant Use with Benzodiazepines or Other CNS Depressants Concomitant use of opioids with benzodiazepines or other central nervous system (CNS) depressants, including alcohol, may result in profound sedation, respiratory depression, coma, and death. (Tramadol and acetaminophen label, Boxed warning)

  • TriazolambenzodiazepineMajor

    • Effects on Driving and Operating Heavy Machinery : Patients receiving triazolam should be cautioned against driving or operating heavy machinery, as well as avoiding concomitant use with alcohol and other CNS depressant drugs. (Triazolam label, Warnings and precautions)

  • TrifluoperazineantipsychoticMajor

    CONTRAINDICATIONS A known hypersensitivity to phenothiazines, comatose or greatly depressed states due to central nervous system depressants and, in cases of existing blood dyscrasias, bone marrow depression and preexisting liver damage. (Trifluoperazine label, Contraindications)

  • Zaleplonsedative-hypnoticMajor

    The use of zaleplon with other sedative-hypnotics at bedtime or the middle of the night is not recommended (see ). (Zaleplon label, Warnings)

  • Zolpidemsedative-hypnoticMajor

    The use of Zolpidem Tartrate with other sedative-hypnotics (including other zolpidem products) at bedtime or the middle of the night is not recommended. (Zolpidem label, Warnings and precautions)

Moderate interactions (164)

  • Allopurinolxanthine oxidase inhibitorModerate

    Inform patients also that the central nervous system depressant effects of allopurinol tablets may be additive to those of alcohol and other CNS depressants. (Allopurinol label, Warnings and precautions)

  • AminophyllinemethylxanthineModerate

    25% increase Diazepam Benzodiazepines increase CNS concentrations of adenosine, a potent CNS depressant, while theophylline blocks adenosine receptors. (Aminophylline label, Drug interactions)

  • Amitriptylinetricyclic antidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Amoxapinetricyclic antidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Amphotericin BantifungalModerate

    Skeletal Muscle Relaxants Amphotericin B-induced hypokalemia may enhance the curariform effect of skeletal muscle relaxants (e.g. tubocurarine) due to hypokalemia. (Amphotericin B label, Drug interactions)

  • AripiprazoleantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • AsenapineantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • AspirinNSAIDModerate

    Low dose aspirin also showed an induction effect on CYP2C19. (Carisoprodol label, Drug interactions)

  • Aspirin and dipyridamoleantiplatelet agentModerate

    Low dose aspirin also showed an induction effect on CYP2C19. (Carisoprodol label, Drug interactions)

  • Atracuriumneuromuscular blockerModerate

    If other muscle relaxants are used during the same procedure, the possibility of a synergistic or antagonist effect should be considered. (Atracurium label, Drug interactions)

  • AzelastineantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Baclofenmuscle relaxantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Digitalis glycosides: Thiazide-induced hypokalemia or hypomagnesemia may predispose the patients to digoxin toxicity Skeletal muscle relaxants: Possible increased responsiveness to muscle relaxants such as curare derivatives. (Benazepril and hydrochlorothiazide label, Drug interactions)

  • Sedatives/Hypnotics: midazolam (oral) triazolam ↑ midazolam (oral) ↑ triazolam Use caution when midazolam or triazolam is concomitantly administered with BIXLENVO. (Bictegravir, emtricitabine, and tenofovir alafenamide label, Drug interactions)

  • Skeletal muscle relaxants, nondepolarizing (e.g., tubocurarine) - possible increased responsiveness to the muscle relaxant. (Bisoprolol and hydrochlorothiazide label, Precautions)

  • Botulinum toxin type Aneuromuscular blockerModerate

    Aminoglycosides or other agents interfering with neuromuscular transmission Anticholinergic drugs Botulinum neurotoxin products Muscle relaxants Aminoglycoside antibiotics, anticholinergic agents, or any other agents that interfere with neuromuscular transmission may potentiate the effect of DAXXIFY; co-administer only with caution and close observation. (Botulinum toxin type A label, Drug interactions)

  • BrexpiprazoleantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Brimonidinealpha-adrenergic agonistModerate

    Use with CNS depressants may result in an additive or potentiating effect. (Brimonidine label, Drug interactions)

  • Brimonidine and timololalpha-adrenergic agonistModerate

    Use with CNS depressants may result in an additive or potentiating effect. (Brimonidine and timolol label, Drug interactions)

  • BrivaracetamanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Bupivacainelocal anestheticModerate

    Possible early warning signs of central nervous system (CNS) toxicity are restlessness, anxiety, incoherent speech, lightheadedness, numbness and tingling of the mouth and lips, metallic taste, tinnitus, dizziness, blurred vision, tremors, twitching, CNS depression, or drowsiness. (Bupivacaine label, Warnings and precautions)

  • Bupivacaine and epinephrinelocal anestheticModerate

    Possible early warning signs of central nervous system (CNS) toxicity are restlessness, anxiety, incoherent speech, lightheadedness, numbness and tingling of the mouth and lips, metallic taste, tinnitus, dizziness, blurred vision, tremors, twitching, CNS depression, or drowsiness. (Bupivacaine and epinephrine label, Warnings and precautions)

  • BupropionantidepressantModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • Buspironeserotonergic drugModerate

    Triazolam/flurazepam: Coadministration of buspirone with either triazolam or flurazepam did not appear to prolong or intensify the sedative effects of either benzodiazepine. (Buspirone label, Drug interactions)

  • Butalbital and acetaminophenbarbiturateModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Low dose aspirin also showed an induction effect on CYP2C19. (Carisoprodol label, Drug interactions)

  • Candesartan and hydrochlorothiazideangiotensin II receptor blocker (ARB)Moderate

    Skeletal muscle relaxants, nondepolarizing (e.g., tubocurarine) − Possible increased responsiveness to muscle relaxants such as curare derivatives. (Candesartan and hydrochlorothiazide label, Drug interactions)

  • Cannabidiol (prescription)anticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • CariprazineantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • CenobamateanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Chlorothiazidethiazide diureticModerate

    Skeletal Muscle Relaxants, Nondepolarizing (e.g., Tubocurarine) - possible increased responsiveness to the muscle relaxant. (Chlorothiazide label, Drug interactions)

  • ChlorpheniramineantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Chlorzoxazonemuscle relaxantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • CimetidineH2 blockerModerate

    Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • CitalopramSSRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • ClemastineantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Clomipraminetricyclic antidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • ClozapineantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • ColistimethateantibioticModerate

    Curariform muscle relaxants (e.g., tubocurarine) and other drugs, including ether, succinylcholine, gallamine, decamethonium and sodium citrate, potentiate the neuromuscular blocking effect and should be used with extreme caution in patients being treated with Coly-Mycin M Parenteral. (Colistimethate label, Drug interactions)

  • CyclophosphamideimmunosuppressantModerate

    Prolonged apnea may occur with concurrent depolarizing muscle relaxants (e.g., succinylcholine). (Cyclophosphamide label, Drug interactions)

  • CyproheptadineantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Dantrolenemuscle relaxantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Daridorexantsedative-hypnoticModerate

    • Due to sedative properties, may impair ability to perform hazardous tasks such as driving or operating machinery (5.1) (Carisoprodol label, Warnings and precautions)

  • Desfluranegeneral anestheticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Desipraminetricyclic antidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • DesvenlafaxineSNRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • DeutetrabenazineVMAT2 inhibitorModerate

    Alcohol or other sedating drugs: May have additive sedation and somnolence ( 7.5 ) (Deutetrabenazine label, Drug interactions)

  • DexchlorpheniramineantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Dexmedetomidinealpha-adrenergic agonistModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • DimenhydrinateantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • DiphenhydramineantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Divalproex (valproate)anticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Doxepintricyclic antidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • DoxylamineantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • DronabinolcannabinoidModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Droperidoldopamine antagonistModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • DuloxetineSNRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • EfavirenzantiretroviralModerate

    Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • EluxadolineopioidModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Skeletal muscle relaxants, nondepolarizing (e.g., tubocurarine) Possible increased responsiveness to the muscle relaxant. (Enalapril and hydrochlorothiazide label, Drug interactions)

  • EscitalopramSSRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • EslicarbazepineanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Esomeprazoleproton pump inhibitorModerate

    Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • EthosuximideanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Etomidategeneral anestheticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • EtravirineantiretroviralModerate

    Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • FelbamateanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • FlibanserinCNS depressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Fluconazoleazole antifungalModerate

    Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • FlumazenilbenzodiazepineModerate

    • Due to sedative properties, may impair ability to perform hazardous tasks such as driving or operating machinery (5.1) (Carisoprodol label, Warnings and precautions)

  • FluoxetineSSRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • FluphenazineantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • FluvoxamineSSRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • FosphenytoinanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Guanfacinealpha-adrenergic agonistModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • HaloperidolantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • IloperidoneantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Imipraminetricyclic antidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • IncobotulinumtoxinAneuromuscular blockerModerate

    Aminoglycosides and Other Agents Interfering with Neuromuscular Transmission Co-administration of XEOMIN and aminoglycosides or other agents interfering with neuromuscular transmission (e.g., tubocurarine-type muscle relaxants) should only be performed with caution as these agents may potentiate the effect of the toxin. (IncobotulinumtoxinA label, Drug interactions)

  • Isofluranegeneral anestheticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • IsoniazidantibioticModerate

    Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • LacosamideanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Lemborexantsedative-hypnoticModerate

    • Due to sedative properties, may impair ability to perform hazardous tasks such as driving or operating machinery (5.1) (Carisoprodol label, Warnings and precautions)

  • LevetiracetamanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • LevomilnacipranSNRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • Lidocaine and epinephrinelocal anestheticModerate

    Possible early warning signs of central nervous system (CNS) toxicity are restlessness, anxiety, incoherent speech, lightheadedness, metallic taste, tinnitus, dizziness, blurred vision, tremors, twitching, CNS depression, or drowsiness. (Lidocaine and epinephrine label, Warnings and precautions)

  • Skeletal muscle relaxants, nondepolarizing (e.g., tubocurarine) - possible increased responsiveness to the muscle relaxant. (Lisinopril and hydrochlorothiazide label, Drug interactions)

  • Lofexidinealpha-adrenergic agonistModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • LoxapineantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • LumateperoneantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • LurasidoneantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • MeclizineantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Methocarbamolmuscle relaxantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • MethohexitalbarbiturateModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • MethsuximideanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Metoclopramidedopamine antagonistModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • MetyrosineModerate

    Concurrent use of metyrosine with alcohol or other CNS depressants can increase their sedative effects. (Metyrosine label, Drug interactions)

  • MirtazapineantidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Naloxoneopioid antagonistModerate

    WARNINGS AND PRECAUTIONS Risk of Recurrent Respiratory and CNS Depression : Due to the duration of action of naloxone relative to the opioid, respiratory and CNS depression may recur after the first dose of naloxone. (Naloxone label, Warnings and precautions)

  • Naltrexone and bupropionopioid antagonistModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • NefazodoneantidepressantModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • Nortriptylinetricyclic antidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • OlanzapineantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Olanzapine and fluoxetineantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Omeprazoleproton pump inhibitorModerate

    Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • Omeprazole and sodium bicarbonateproton pump inhibitorModerate

    Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • OnabotulinumtoxinAneuromuscular blockerModerate

    Patients receiving concomitant treatment of BOTOX and aminoglycosides or other agents interfering with neuromuscular transmission (e.g., curare-like agents), or muscle relaxants, should be observed closely because the effect of BOTOX may be potentiated ( 7.1 , 7.4 ) (OnabotulinumtoxinA label, Drug interactions)

  • Orphenadrinemuscle relaxantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Low dose aspirin also showed an induction effect on CYP2C19. (Carisoprodol label, Drug interactions)

  • OxcarbazepineanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • PaliperidoneantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • ParoxetineSSRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • PerampanelanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Phentermine and topiramateCNS stimulantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • PhenytoinanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • PimavanserinantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • PimozideantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Posaconazoleazole antifungalModerate

    Concomitant Use with Midazolam : Noxafil can prolong hypnotic/sedative effects. (Posaconazole label, Warnings and precautions)

  • Pramipexoledopamine agonistModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • PrimidoneanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • PromethazineantihistamineModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • PropofolCNS depressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Protriptylinetricyclic antidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • QuetiapineantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Ramelteonsedative-hypnoticModerate

    • Due to sedative properties, may impair ability to perform hazardous tasks such as driving or operating machinery (5.1) (Carisoprodol label, Warnings and precautions)

  • RisperidoneantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Rocuroniumneuromuscular blockerModerate

    In such patients, a peripheral nerve stimulator and use of a small test dose may be of value in monitoring the response to administration of muscle relaxants. (Rocuronium label, Warnings and precautions)

  • Ropiniroledopamine agonistModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • RufinamideanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • ScopolamineanticholinergicModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • SertralineSSRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • Sevofluranegeneral anestheticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Spironolactone and hydrochlorothiazidealdosterone antagonistModerate

    Skeletal muscle relaxants, nondepolarizing (e.g., tubocurarine): Possible increased responsiveness to the muscle relaxant may result. (Spironolactone and hydrochlorothiazide label, Drug interactions)

  • Suvorexantsedative-hypnoticModerate

    • Due to sedative properties, may impair ability to perform hazardous tasks such as driving or operating machinery (5.1) (Carisoprodol label, Warnings and precautions)

  • Tasimelteonsedative-hypnoticModerate

    • Due to sedative properties, may impair ability to perform hazardous tasks such as driving or operating machinery (5.1) (Carisoprodol label, Warnings and precautions)

  • TetrabenazineVMAT2 inhibitorModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • TheophyllinemethylxanthineModerate

    25% increase Diazepam Benzodiazepines increase CNS concentrations of adenosine, a potent CNS depressant, while theophylline blocks adenosine receptors. (Theophylline label, Drug interactions)

  • ThioridazineantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • ThiothixeneantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • TiagabineanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Tizanidinemuscle relaxantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • TopiramateanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • TranylcypromineMAO inhibitorModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • TrazodoneantidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Triamterenepotassium-sparing diureticModerate

    The effects of the following drugs may be potentiated when given together with triamterene: antihypertensive medication, other diuretics, preanesthetic and anesthetic agents, skeletal muscle relaxants (non-depolarizing). (Triamterene label, Drug interactions)

  • Triamterene and hydrochlorothiazidepotassium-sparing diureticModerate

    Thiazides have also been shown to increase the paralyzing effect of nondepolarizing muscle relaxants such as tubocurarine (an effect attributed to potassium loss); consequently, caution should be observed in patients undergoing surgery. (Triamterene and hydrochlorothiazide label, Drug interactions)

  • TrihexyphenidylanticholinergicModerate

    Concurrent use of alcohol or other CNS depressants with trihexyphenidyl may cause increased sedative effects. (Trihexyphenidyl label, Drug interactions)

  • The recent use of other drugs that cause CNS depression or EPS symptoms may also increase the risk; consider reducing the dosage or discontinuing the drug. (Trimethobenzamide label, Warnings and precautions)

  • Trimipraminetricyclic antidepressantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Valproic acidanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • Vecuroniumneuromuscular blockerModerate

    In such patients, a peripheral nerve stimulator and use of a small test dose may be of value in monitoring the response to administration of muscle relaxants. (Vecuronium label, Warnings)

  • VenlafaxineSNRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • VigabatrinanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • VilazodoneSSRIModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • Voriconazoleazole antifungalModerate

    Co-administration of CYP2C19 inhibitors, such as omeprazole or fluvoxamine, with carisoprodol could result in increased exposure of carisoprodol and decreased exposure of meprobamate. (Carisoprodol label, Drug interactions)

  • VortioxetineantidepressantModerate

    Since the sedative effects of carisoprodol and other CNS depressants (e.g., alcohol, benzodiazepines, opioids, tricyclic antidepressants) may be additive, appropriate caution should be exercised with patients who take more than one of these CNS depressants simultaneously. (Carisoprodol label, Warnings and precautions)

  • ZiprasidoneantipsychoticModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

  • ZonisamideanticonvulsantModerate

    • Additive sedative effects when used with other CNS depressants including alcohol (5.1) (Carisoprodol label, Warnings and precautions)

Minor mentions (8)

  • Dopamine agonists, such as bromocriptine, and muscle relaxants, such as dantrolene, are often used in the treatment of NMS; however, their effectiveness has not been demonstrated in controlled studies. (Carbidopa label, Warnings)

  • DextroamphetamineCNS stimulantMinor

    Antihistamines Amphetamines may counteract the sedative effect of antihistamines. (Dextroamphetamine label, Drug interactions)

  • In Postanesthetic Use Doxapram is neither an antagonist to muscle relaxant drugs nor a specific narcotic antagonist. (Doxapram label, Warnings)

  • The “gasping syndrome” is characterized by central nervous system (CNS) depression, metabolic acidosis, and gasping respirations. (Epoetin alfa label, Warnings and precautions)

  • KetorolacNSAIDMinor

    Nondepolarizing Muscle Relaxants In postmarketing experience there have been reports of a possible interaction between ketorolac tromethamineIV/IMand nondepolarizing muscle relaxants that resulted in apnea. (Ketorolac label, Drug interactions)

  • MitapivatCYP3A4 inducerMinor

    Co-administration of CYP2C19 inducers, such as rifampin or St. (Carisoprodol label, Drug interactions)

  • Prazosinalpha blockerMinor

    …to date with the following: (1) cardiac glycosides– digitalis and digoxin; (2) hypoglycemics–insulin, chlorpropamide, phenformin, tolazamide, and tolbutamide; (3) tranquilizers and sedatives–chlordiazepoxide, diazepam, and phenobarbital; (4) antigout–allopurinol, colchicine, and probenecid; (5) antiarrhythmics–procainamide, propranolol (see WARNINGS however),… (Prazosin label, Drug interactions)

  • RifampinantibioticMinor

    Co-administration of CYP2C19 inducers, such as rifampin or St. (Carisoprodol label, Drug interactions)

No significant interaction reported (2)

  • LenacapavirantiretroviralNo interaction

    Sedatives/Hypnotics: midazolam (oral) triazolam ↑ midazolam (oral) ↑ triazolam Use with caution when midazolam or triazolam is concomitantly administered with SUNLENCA 7.4 Drugs without Clinically Significant Interactions with SUNLENCA Based on drug interaction studies conducted with SUNLENCA, no clinically significant drug interactions have been observed with:… (Lenacapavir label, Drug interactions)

  • Montelukastleukotriene receptor antagonistNo interaction

    …adjustment is needed when SINGULAIR is co-administered with theophylline, prednisone, prednisolone, oral contraceptives, fexofenadine, digoxin, warfarin, gemfibrozil, itraconazole, thyroid hormones, sedative hypnotics, non-steroidal anti-inflammatory agents, benzodiazepines, decongestants, and Cytochrome P450 (CYP) enzyme inducers [see Clinical Pharmacology (12.3) ]. (Montelukast label, Drug interactions)

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Not medical advice. Severity reflects the label's wording, not your circumstances. A "major" flag can be routine under supervision and a "minor" one can matter at high doses. Ask a pharmacist.