Interação entre Butorfanol e Naltrexona + bupropiona

…limited to, WELLBUTRIN, WELLBUTRIN SR, WELLBUTRIN XL, APLENZIN and ZYBAN) Bulimia or anorexia nervosa, which increase the risk for seizure [see Warnings and Precautions (5.3) ] Chronic opioid or opiate agonist (e.g., methadone) or partial agonists (e.g., buprenorphine) use, or acute opiate withdrawal [see Warnings and Precautions (5.4) and Drug Interactions (7.2)…

Chronic opioid use ( 4 )

…Administration (2.1) and Clinical Pharmacology (12.3) ] if a dose is missed, a patient should wait until the next scheduled dose to resume the regular dosing schedule 5.4 Patients Receiving Opioid Analgesics Vulnerability to Opioid Overdose: CONTRAVE should not be administered to patients receiving chronic opioids, due to the naltrexone component, which is an opioid receptor…

An attempt by a patient to overcome any naltrexone opioid blockade by administering large amounts of exogenous opioids is especially dangerous and may lead to a fatal overdose or life-threatening opioid intoxication (e.g., respiratory arrest, circulatory collapse).

In patients requiring intermittent opiate treatment, CONTRAVE therapy should be temporarily discontinued and lower doses of opioids may be needed.

Management of respiratory depression may include close observation, supportive measures, and use of opioid overdose reversal agents (e.g., naloxone, nalmefene), depending on the patient's clinical status [see OVERDOSAGE ].

If concomitant use is warranted, consider ‎prescribing naloxone for the emergency treatment of opioid overdose.

…that affect the serotonergic neurotransmitter system, such as selective serotonin reuptake inhibitors (SSRIs), serotonin and norepinephrine reuptake inhibitors (SNRIs), tricyclic antidepressants (TCAs), triptans, 5-HT3 receptor antagonists, drugs that affect the serotonin neurotransmitter system (e.g., mirtazapine, trazodone, tramadol), certain muscle relaxants…

In patients who are not opioid dependent, naloxone has also been reported to be effective.