Risperidone interactions

Avoid alcohol. (Risperidone label, Drug interactions)

• 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)

Reserve the combination of amiodarone with other antiarrhythmic therapies that prolong the QTc to patients with life-threatening ventricular arrhythmias who are incompletely responsive to a single agent. (Amiodarone label, Warnings and precautions)

Cerebrovascular Adverse Events, Including Stroke, In Elderly Patients with Dementia-Related Psychosis In placebo-controlled trials in elderly subjects with dementia, patients randomized to risperidone, aripiprazole, and olanzapine had a higher incidence of stroke and transient ischemic attack, including fatal stroke. (Asenapine label, Warnings and precautions)

This risk which can be fatal should be considered in patients with certain cardiovascular disorders including known QT prolongation or history torsades de pointes, those with proarrhythmic conditions, and with other drugs that prolong the QT interval. (Azithromycin label, Warnings and precautions)

Cerebrovascular Adverse Reactions Including Stroke in Elderly Patients with Dementia-Related Psychosis In placebo-controlled trials in elderly patients with dementia, patients randomized to risperidone, aripiprazole, and olanzapine had a higher incidence of stroke and transient ischemic attack, including fatal stroke. (Brexpiprazole label, Warnings and precautions)

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)

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)

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)

Cerebrovascular Adverse Reactions, Including Stroke , in Elderly Patients with Dementia -Related Psychosis In placebo-controlled trials in elderly patients with dementia, patients randomized to risperidone, aripiprazole, and olanzapine had a higher incidence of stroke and transient ischemic attack, including fatal stroke. (Cariprazine label, Warnings and precautions)

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)

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)

Avoid use in patients with known prolongation, those with hypokalemia, and with other drugs that prolong the QT interval. (Ciprofloxacin label, Warnings and precautions)

Colchicine (in patients with normal renal and hepatic function) Use With Caution Antipsychotics: Pimozide Contraindicated Pimozide: [See Contraindications ( 4.2 )] Quetiapine Lurasidone Quetiapine: Quetiapine is a substrate for CYP3A4, which is inhibited by clarithromycin. (Clarithromycin label, Drug interactions)

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)

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)

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

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)

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)

Neuroleptic Malignant Syndrome (NMS) A potentially fatal symptom complex sometimes referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (Deutetrabenazine label, Warnings and precautions)

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)

Use with Drugs that Prolong QT Interval and Antiarrhythmic Agents The use of dofetilide in conjunction with other drugs that prolong the QT interval has not been studied and is not recommended. (Dofetilide label, Warnings)

…Clinical Pharmacology (12.3) ] • Concomitant use of drugs or herbal products that prolong the QT interval and might increase the risk of torsade de pointes, such as phenothiazine antipsychotics, tricyclic antidepressants, certain oral macrolide antibiotics, and Class I and III antiarrhythmics • Liver or lung toxicity related to the previous use of amiodarone… (Dronedarone label, Contraindications)

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

• 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)

Coadministration of other drugs known to prolong the QT interval and which are metabolized via the enzyme CYP3A4 such as erythromycin, pimozide, and quinidine are contraindicated in patients receiving fluconazole. (Fluconazole label, Contraindications)

Avoid co-administration of CONTEPO with drugs known to prolong the QT interval. (Fosfomycin label, Drug interactions)

• 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)

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)

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)

Therefore, PLAQUENIL is not recommended in patients taking other drugs that have the potential to prolong the QT interval. (Hydroxychloroquine label, Warnings and precautions)

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)

Cerebrovascular Adverse Reactions, Including Stroke, in Elderly Patients with Dementia-Related Psychosis In placebo-controlled trials in elderly subjects with dementia, patients randomized to risperidone, aripiprazole, and olanzapine had a higher incidence of stroke and transient ischemic attack, including fatal stroke. (Iloperidone label, Warnings and precautions)

Bradycardia may increase the risk of QT prolongation which may lead to severe ventricular arrhythmias, including torsade de pointes, especially in patients with risk factors such as use of QTc prolonging drugs [see Adverse Reactions ( 6.2 )] . (Ivabradine label, Warnings and precautions)

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

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

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

Avoid use in patients with known prolongation, those with hypokalemia, and with other drugs that prolong the QT interval ( 5.11 , 8.5 ) (Levofloxacin label, Warnings and precautions)

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)

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)

Agranulocytosis (including fatal cases) has been reported with other antipsychotic drugs. (Lumateperone label, Warnings and precautions)

Cerebrovascular Adverse Reactions, Including Stroke in Elderly Patients with Dementia-Related Psychosis In placebo-controlled trials with risperidone, aripiprazole, and olanzapine in elderly subjects with dementia, there was a higher incidence of cerebrovascular adverse reactions (cerebrovascular accidents and transient ischemic attacks), including fatalities,… (Lurasidone label, Warnings and precautions)

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)

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)

• Tardive Dyskinesia (TD), Other Extrapyramidal Symptoms (EPS), and Neuroleptic Malignant Syndrome (NMS) : Avoid concomitant use of other drugs known to cause TD/EPS/NMS and avoid use in patients with Parkinson’s Disease. (Metoclopramide label, Warnings and precautions)

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 ResuscitationOnly 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)

Examples diazepam, alprazolam, alcohol Drugs that Prolong QTc Interval Clinical Impact The concomitant use of other drugs which prolong the QTc interval with REMERON/REMERONSolTab, increase the risk of QT prolongation and/or ventricular arrhythmias (e.g., Torsades de Pointes). (Mirtazapine 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. (Morphine 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. (Nalbuphine label, Boxed warning)

…Antiarrhythmic: amiodarone, dronedarone, flecainide, propafenone, quinidine • Anti-gout: colchicine (in patients with renal and/or hepatic impairment [see Table 2 , Drug Interactions (7.3)] ) • Antipsychotics: lurasidone, pimozide • Benign prostatic hyperplasia agents: silodosin • Cardiovascular agents: eplerenone, ivabradine • Ergot derivatives: dihydroergotamine, ergotamine,… (Nirmatrelvir and ritonavir label, Contraindications)

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)

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

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)

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)

RISPERDAL CONSTA is contraindicated in patients with a known hypersensitivity to either risperidone or paliperidone, or to any of the excipients in the RISPERDAL CONSTA formulation. (Risperidone label, Contraindications)

…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)

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

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

The use of WAKIX should be avoided in patients with known QT prolongation or in combination with other drugs known to prolong the QT interval [see Drug Interactions ( 7.1 )]. (Pitolisant label, Warnings and precautions)

• 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)

• Avoid use with other antiarrhythmic agents or drugs that prolong the QT interval. (Propafenone label, Warnings and precautions)

Cerebrovascular Adverse Reactions, Including Stroke, in Elderly Patients with Dementia-Related Psychosis In placebo-controlled trials with risperidone, aripiprazole, and olanzapine in elderly subjects with dementia, there was a higher incidence of cerebrovascular adverse reactions (cerebrovascular accidents and transient ischemic attacks), including fatalities,… (Quetiapine label, Warnings and precautions)

…Concomitant use of clopidogrel and rifampin should be discouraged Increase active metabolite exposure and risk of bleeding Ticagrelor Prevention or Management: Avoid use Decrease exposure Antipsychotics Haloperidol Decrease plasma concentrations by 70% Lurasidone Prevention or Management : Concomitant use is contraindicated (See CONTRAINDICATIONS ) Decrease exposure… (Rifampin label, Drug interactions)

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)

Avoid the concomitant use of drugs known to prolong the QTc interval. (Sertraline label, Drug interactions)

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

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)

Neuroleptic Malignant Syndrome (NMS) A potentially fatal symptom complex sometimes referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with tetrabenazine tablets and other drugs that reduce dopaminergic transmission [see Drug Interactions (7.6) ]. (Tetrabenazine label, Warnings and precautions)

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)

• 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)

Neuroleptic Malignant Syndrome A potentially fatal symptom complex sometimes referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with dose reduction or Discontinuation of trihexyphenidyl. (Trihexyphenidyl label, Warnings)

Neuroleptic Malignant Syndrome (NMS ) A potentially fatal symptom complex referred to as Neuroleptic Malignant Syndrome (NMS) has been reported in association with drugs that reduce dopaminergic transmission. (Valbenazine label, Warnings and precautions)

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

Cerebrovascular Adverse Reactions, Including Stroke, in Elderly Patients with Dementia-Related Psychosis In placebo-controlled trials in elderly subjects with dementia, patients randomized to risperidone, aripiprazole, and olanzapine had a higher incidence of stroke and transient ischemic attack, including fatal stroke. (Ziprasidone label, Warnings and precautions)

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)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

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)

Withdrawal-Emergent Hyperpyrexia and Confusion A symptom complex resembling neuroleptic malignant syndrome (characterized by elevated temperature, muscular rigidity, altered consciousness, and autonomic instability), with no other obvious etiology, has been reported in association with rapid dose reduction, withdrawal of, or changes in drugs that increase central… (Amantadine label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

RISPERDAL CONSTA and other antipsychotic drugs should be used cautiously in patients at risk for aspiration pneumonia. [see also Boxed Warning and Warnings and Precautions (5.1) ] 5.13 Priapism Priapism has been reported during postmarketing surveillance [see Adverse Reactions (6.2) ] . (Risperidone label, Warnings and precautions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Patients should also be cautioned that the central nervous system depressant effects of intrathecal baclofen may be additive to those of alcohol and other CNS depressants. (Baclofen label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

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)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

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

Warn patients of the potential danger of self-administration of benzodiazepines or other CNS depressants while under treatment with buprenorphine and naloxone sublingual tablets [see Warnings and Precautions (5.3) , Drug Interactions (7) ] . (Buprenorphine and naloxone label, Warnings and precautions)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

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, acetaminophen and caffeine may enhance the effects of: other narcotic analgesics, alcohol, general anesthetics, tranquilizers such as chlordiazepoxide, sedative-hypnotics, or other CNS depressants, causing increased CNS depression. (Butalbital, acetaminophen, and caffeine label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Other CNS depressants, including alcohol, could potentiate the somnolence and sedation effect of EPIDIOLEX. (Cannabidiol (prescription) label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Dopamine D2 Receptor Antagonists and Isoniazid Dopamine D2 receptor antagonists (e.g., phenothiazines, butyrophenones, risperidone, metoclopramide, papaverine) and isoniazid may reduce the effectiveness of levodopa. (Carbidopa and levodopa label, Drug interactions)

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

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

RISPERDAL CONSTA and other antipsychotic drugs should be used cautiously in patients at risk for aspiration pneumonia. [see also Boxed Warning and Warnings and Precautions (5.1) ] 5.13 Priapism Priapism has been reported during postmarketing surveillance [see Adverse Reactions (6.2) ] . (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Cimetidine and ranitidine increase the bioavailability of risperidone. (Risperidone label, Drug interactions)

Avoid use of Citalopram Capsules in patients with congenital long QT syndrome, bradycardia, hypokalemia or hypomagnesemia, recent acute myocardial infarction, or uncompensated heart failure and patients taking other drugs that prolong the QTc interval. (Citalopram label, Warnings and precautions)

Clozapine may decrease clearance of risperidone. (Risperidone label, Drug interactions)

Antipsychotics and Antianxiety Agents The concomitant administration of RYANODEX with antipsychotic and antianxiety agents may potentiate their effects on the central nervous system [see Warnings and Precautions ( 5.2 )] . (Dantrolene label, Drug interactions)

CNS-Depressant Effects and Daytime Impairment: Impairs alertness and motor coordination including morning impairment. (Daridorexant label, Warnings and precautions)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

Risperidone Clinical impact Combined use of methylphenidate with risperidone when there is a change, whether an increase or decrease, in dosage of either or both medications, may increase the risk of extrapyramidal symptoms (EPS) Intervention Monitor for signs of EPS (Dexmethylphenidate label, Drug interactions)

…increase certain actions or side effects of anticholinergic drugs including dicyclomine hydrochloride: amantadine, antiarrhythmic agents of Class I (e.g., quinidine), antihistamines, antipsychotic agents (e.g., phenothiazines), benzodiazepines, MAO inhibitors, narcotic analgesics (e.g., meperidine), nitrates and nitrites, sympathomimetic agents, tricyclic antidepressants,… (Dicyclomine label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

The concomitant use of alcohol or other central nervous system depressants may have an additive effect. (Dimenhydrinate label, Warnings)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Potential additive effects when used in combination with CNS depressants or sedating antihistamines. (Doxepin label, Warnings and precautions)

Concomitant use of other drugs that cause dizziness, confusion, sedation, or somnolence such as CNS depressants may increase this effect (e.g., barbiturates, benzodiazepines, lithium, opioids, buspirone, scopolamine, antihistamines, tricyclic antidepressants, other anticholinergic agents, and muscle relaxants). (Dronabinol label, Warnings and precautions)

Observe patients carefully when the dosage of NORTHERA is changed or when concomitant levodopa is reduced abruptly or discontinued, especially if the patient is receiving neuroleptics. (Droxidopa label, Warnings and precautions)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Exacerbated by other CNS depressants, and in settings where flibanserin concentrations are increased. (Flibanserin label, Warnings and precautions)

Fluoxetine and paroxetine increase plasma concentrations of risperidone. (Risperidone label, Drug interactions)

CNS Active Drugs Antipsychotics: See Warnings and Precautions ( 5.2 ) . (Fluvoxamine label, Drug interactions)

…Antidepressants, QTc Prolonging Drugs Formoterol, as with other beta 2 -agonists, should be administered with extreme caution to patients being treated with monoamine oxidase inhibitors, tricyclic antidepressants, or drugs known to prolong the QTc interval because the effect of adrenergic agonists on the cardiovascular system may be potentiated by these agents. (Formoterol label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

…medications that may reduce the glucose-lowering effect of sulfonylureas including glimepiride, leading to worsening glycemic control: danazol, glucagon, somatropin, protease inhibitors, atypical antipsychotic medications (e.g., olanzapine and clozapine), barbiturates, diazoxide, laxatives, rifampin, thiazides and other diuretics, corticosteroids, phenothiazines, thyroid… (Glimepiride label, Drug interactions)

The following are examples of medication that may reduce the glucose-lowering effect of GLUCOTROL XL, leading to worsening glycemic control: atypical antipsychotics (e.g., olanzapine and clozapine), corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease… (Glipizide label, Drug interactions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

RISPERDAL CONSTA and other antipsychotic drugs should be used cautiously in patients at risk for aspiration pneumonia. [see also Boxed Warning and Warnings and Precautions (5.1) ] 5.13 Priapism Priapism has been reported during postmarketing surveillance [see Adverse Reactions (6.2) ] . (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Drugs That May Decrease the Blood Glucose Lowering Effect of Insulin Aspart Drugs: Atypical antipsychotics (e.g., olanzapine and clozapine), corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents (e.g.,… (Insulin aspart label, Drug interactions)

Drugs That May Decrease the Blood Glucose Lowering Effect of Insulin Degludec Drugs: Atypical antipsychotics (e.g., olanzapine and clozapine), corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents (e.g.,… (Insulin degludec label, Drug interactions)

Drugs That May Decrease the Blood Glucose Lowering Effect of LEVEMIR Drugs: Atypical antipsychotics (e.g., olanzapine and clozapine), corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents (e.g., albuterol,… (Insulin detemir label, Drug interactions)

Drugs that May Decrease the Blood Glucose Lowering Effect of Insulin Glargine-yfgn Drugs: Atypical antipsychotics (e.g., olanzapine and clozapine), corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents… (Insulin glargine label, Drug interactions)

Drugs That May Decrease the Blood Glucose Lowering Effect of LYUMJEV Drugs: Atypical antipsychotics (e.g., olanzapine and clozapine), corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents (e.g., albuterol,… (Insulin lispro label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Antipsychotics, Anxiolytics and Hypnotics Alprazolam Aripiprazole Buspirone Diazepam Haloperidol Midazolam (IV) Quetiapine Ramelteon Risperidone Suvorexant Monitor for adverse reactions. (Itraconazole label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

CNS Depressant Effects and Daytime Impairment: Impairs alertness and motor coordination including morning impairment. (Lemborexant label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

• Encephalopathic Syndrome: Increased risk in patients treated with lithium and an antipsychotic. (Lithium label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

…others drugs or herbal products that are known to prolong the QT interval, including Class 1A (e.g., quinidine, procainamide) or Class III (e.g., amiodarone, sotalol) antiarrhythmics, antipsychotics (e.g., chlorpromazine, haloperidol, thioridazine, ziprasidone), antibiotics (e.g., moxifloxacin), or any other drug known to prolong the QT interval (e.g., pentamidine,… (Loperamide label, Warnings)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

• Coadministration of meclizine hydrochloride with other CNS depressants, including alcohol, may result in increased CNS depression ( 7.1 ). (Meclizine label, Drug interactions)

CNS Depressants and Alcohol Use ATMEKSI may potentiate the effects of CNS (central nervous system) depressants and alcohol. (Methocarbamol label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Methylphenidate Concomitant use with methylphenidate, when there is change in dosage of either medication, may increase the risk of extrapyramidal symptoms (EPS). (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Drugs that Prolong the QT Interval QT prolongation has been reported, particularly when metronidazole was administered with drugs with the potential for prolonging the QT interval. (Metronidazole label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Pharmacokinetic studies between moxifloxacin and other drugs that prolong the QT interval such as cisapride, erythromycin, antipsychotics, and tricyclic antidepressants have not been performed. (Moxifloxacin label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

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)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

RISPERDAL CONSTA and other antipsychotic drugs should be used cautiously in patients at risk for aspiration pneumonia. [see also Boxed Warning and Warnings and Precautions (5.1) ] 5.13 Priapism Priapism has been reported during postmarketing surveillance [see Adverse Reactions (6.2) ] . (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

Fluoxetine and paroxetine increase plasma concentrations of risperidone. (Risperidone label, Drug interactions)

Patients should be carefully observed for signs of central nervous system (CNS) depression, such as somnolence and sedation, when FYCOMPA is used with other drugs with sedative properties because of potential additive effects. (Perampanel label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Topiramate Oral RISPERDAL administered at doses from 1–6 mg/day concomitantly with topiramate 400 mg/day resulted in a 23% decrease in risperidone C max and a 33% decrease in risperidone AUC 0–12 hour at steady state. (Risperidone label, Drug interactions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

RISPERDAL CONSTA and other antipsychotic drugs should be used cautiously in patients at risk for aspiration pneumonia. [see also Boxed Warning and Warnings and Precautions (5.1) ] 5.13 Priapism Priapism has been reported during postmarketing surveillance [see Adverse Reactions (6.2) ] . (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

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

Hyperpyrexia and Confusion Although not reported with pramipexole in the clinical development program, a symptom complex resembling the neuroleptic malignant syndrome (characterized by elevated temperature, muscular rigidity, altered consciousness, and autonomic instability), with no other obvious etiology, has been reported in association with rapid dose reduction,… (Pramipexole label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Carbamazepine and other enzyme inducers decrease plasma concentrations of risperidone. (Risperidone label, Drug interactions)

RISPERDAL CONSTA and other antipsychotic drugs should be used cautiously in patients at risk for aspiration pneumonia. [see also Boxed Warning and Warnings and Precautions (5.1) ] 5.13 Priapism Priapism has been reported during postmarketing surveillance [see Adverse Reactions (6.2) ] . (Risperidone label, Warnings and precautions)

The impairment may be amplified by concomitant use of other central-nervous-system depressants such as alcohol, sedatives/hypnotics (including barbiturates), narcotics, narcotic analgesics, general anesthetics, tricyclic antidepressants, and tranquilizers; therefore such agents should either be eliminated or given in reduced dosage in the presence of promethazine… (Promethazine label, Warnings)

As with other sedative medications, there is wide interpatient variability in DIPRIVAN dosage requirements, and these requirements may change with time. (Propofol label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

The use of alcohol and other CNS depressants may increase the risk of such behaviors. (Ramelteon label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

Withdrawal-Emergent Hyperpyrexia and Confusion A symptom complex resembling neuroleptic malignant syndrome (characterized by elevated temperature, muscular rigidity, altered consciousness, and autonomic instability), with no other obvious etiology, has been reported in association with rapid dose reduction, withdrawal of, or changes in drugs that increase central… (Rasagiline label, Warnings and precautions)

Withdrawal-Emergent Hyperpyrexia and Confusion A symptom complex resembling the neuroleptic malignant syndrome (characterized by elevated temperature, muscular rigidity, altered consciousness, and autonomic instability), with no other obvious etiology, has been reported in association with rapid dose reduction of, withdrawal of, or changes in, dopaminergic therapy. (Ropinirole label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Withdrawal Emergent Hyperpyrexia and Confusion Although not reported with ZELAPAR in the clinical development program, a symptom complex resembling the neuroleptic malignant syndrome (characterized by elevated temperature, muscular rigidity, altered consciousness, and autonomic instability), with no other obvious etiology, has been reported in association with… (Selegiline label, Warnings and precautions)

Additive to other QT-prolonging drugs ( 7.1 , 7.2 ) (Sotalol label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

CNS Depressant Effects and Daytime Impairment: Risk of impaired alertness and motor coordination, including impaired driving; risk increases with dose; caution patients taking 20 mg against next-day driving and other activities requiring complete mental alertness ( 5.1 ). (Suvorexant label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Fluoxetine and Paroxetine Fluoxetine (20 mg once daily) and paroxetine (20 mg once daily), CYP 2D6 inhibitors, have been shown to increase the plasma concentration of risperidone 2.5–2.8 fold and 3–9 fold respectively. (Risperidone label, Drug interactions)

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

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Topiramate Oral RISPERDAL administered at doses from 1–6 mg/day concomitantly with topiramate 400 mg/day resulted in a 23% decrease in risperidone C max and a 33% decrease in risperidone AUC 0–12 hour at steady state. (Risperidone label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Excessive reduction of blood glucose (additive effect) f CNS depressant agents (including opioids, alcohol, sedatives, hypnotics) Use with caution d Increased CNS depression Dietary supplements containing sympathomimetics Contraindicated a Antidepressants including but not limited to: Other MAOIs (e.g., linezolid, intravenous methylene blue, selective MAOIs)… (Tranylcypromine label, Drug interactions)

…are inhibitors of CYP3A4 (e.g., itraconazole, clarithromycin, voriconazole), or known to prolong QT interval including Class 1A antiarrhythmics (e.g., quinidine, procainamide) or Class 3 antiarrhythmics (e.g., amiodarone, sotalol), certain antipsychotic medications (e.g., ziprasidone, chlorpromazine, thioridazine), and certain antibiotics (e.g., gatifloxacin). (Trazodone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

…like other beta 2 -agonists, should be administered with extreme caution to patients being treated with monoamine oxidase inhibitors, tricyclic antidepressants, or drugs known to prolong the QTc interval or within 2 weeks of discontinuation of such agents, because the effect of adrenergic agonists on the cardiovascular system may be potentiated by these agents. (Umeclidinium and vilanterol label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Risperidone - Venlafaxine administered under steady-state conditions at 150 mg/day slightly inhibited the CYP2D6-mediated metabolism of risperidone (administered as a single 1 mg oral dose) to its active metabolite, 9-hydroxyrisperidone, resulting in an approximate 32% increase in risperidone AUC. (Venlafaxine label, Drug interactions)

Clinically significant hypotension has been observed with concomitant use of oral RISPERDAL and antihypertensive medication. (Risperidone label, Warnings and precautions)

Eszopiclone (CYP3A4 Inhibition) Not Studied In Vivo or In Vitro , but Drug Plasma Exposure Likely to be Increased which may Increase the Sedative Effect of Eszopiclone Dose reduction of eszopiclone is recommended. (Voriconazole label, Drug interactions)

Patients should be carefully observed for signs of central nervous system (CNS) depression, such as somnolence and sedation, when ZONISADE is used with other drugs with sedative properties because of potential additive effects. (Zonisamide label, Warnings and precautions)

Guanethidine or similarly acting compounds; thyroid medication; alcohol, barbiturates and other CNS depressants; and disulfiram – see WARNINGS section. (Amitriptyline label, Drug interactions)

Some cases presented with features resembling neuroleptic malignant syndrome. (Atomoxetine label, Drug interactions)

Drug Interactions Antipsychotic drugs such as phenothiazines or haloperidol; tricyclic antidepressants [ see WARNINGS ]. (Benztropine label, Drug interactions)

Effects of levodopa and dopamine agonists may be antagonized. (Risperidone label, Drug interactions)

Digoxin Oral RISPERDAL (0.25 mg twice daily) did not show a clinically relevant effect on the pharmacokinetics of digoxin. (Risperidone label, Drug interactions)

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

Co-administration of antipsychotics with glycopyrrolate may lead to worsening of tardive dyskinesia. (Glycopyrrolate label, Drug interactions)

There have been no definitive drug-drug interaction studies to examine pharmacokinetic or pharmacodynamic interaction with other drugs; however, in humans, granisetron hydrochloride injection has been safely administered with drugs representing benzodiazepines, neuroleptics and anti-ulcer medications commonly prescribed with antiemetic treatments. (Granisetron label, Drug interactions)

Atypical Antipsychotics (e.g., olanzapine and clozapine), Corticosteroids, Danazol, Diuretics, Estrogens, Glucagon, Isoniazid, Niacin, Oral Contraceptives, Phenothiazines, Progestogens (e.g., in oral contraceptives), Protease inhibitors, Somatropin, Sympathomimetic Agents (e.g., albuterol, epinephrine, terbutaline) and Thyroid Hormones. (Insulin regular (human) label, Drug interactions)

Examples: Atypical antipsychotics (e.g., olanzapine and clozapine), calcium channel antagonists, corticosteroids, danazol, diuretics, estrogens, glucagon, isoniazid, niacin, oral contraceptives, phenothiazines, progestogens (e.g., in oral contraceptives), protease inhibitors, somatropin, sympathomimetic agents (e.g., albuterol, epinephrine, terbutaline), and… (Repaglinide label, Drug interactions)

In most cases, patients were using concomitant medications (antidepressants, antipsychotics, stimulants, narcotics) that are thought to lower the seizure threshold. (Tiagabine label, Warnings)

In drug interaction studies, oral RISPERDAL did not significantly affect the pharmacokinetics of donepezil and galantamine, which are metabolized by CYP 2D6. (Risperidone label, Drug interactions)

Erythromycin There were no significant interactions between oral RISPERDAL and erythromycin. (Risperidone label, Drug interactions)

In drug interaction studies, oral RISPERDAL did not significantly affect the pharmacokinetics of donepezil and galantamine, which are metabolized by CYP 2D6. (Risperidone label, Drug interactions)

…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)