Buprenex: Uses, Dosage and Side Effects Uses, Dosage & Side Effects

Buprenex is contraindicated in patients with significant respiratory depression, acute or severe bronchial asthma in an unmonitored setting or without resuscitative equipment, known or suspected gastrointestinal obstruction including paralytic ileus, and hypersensitivity to buprenorphine or any component of the formulation.

Common adverse reactions include nausea, vomiting, dizziness, drowsiness, sweating, headache, and low blood pressure. Other possible effects include constipation, itching, and respiratory depression. Serious adverse reactions include life-threatening respiratory depression, severe hypotension, adrenal insufficiency, opioid-induced hyperalgesia, and physical dependence. Misuse can cause addiction, overdose, or death.

Buprenex is a potent opioid and must be administered by qualified healthcare professionals in a setting where respiratory and cardiovascular monitoring and emergency support are available. Use extreme caution in patients with respiratory disease, sleep apnea, head injury, reduced consciousness, liver impairment, or concurrent use of alcohol, benzodiazepines, or other central nervous system depressants. Monitor for sedation, respiratory depression, hypotension, and signs of misuse or dependence. Naloxone and appropriate resuscitation equipment should be available. Avoid abrupt discontinuation after prolonged use unless medically directed.

The usual adult dose in the US prescribing information is 0.3 mg by deep intramuscular injection or slow intravenous injection over at least two minutes. If necessary, a further 0.3 mg dose may be given after 30–60 minutes, subject to the prescribing information and clinical assessment. In selected circumstances, a single dose may be increased to 0.6 mg under medical supervision. Dosing must be individualized according to pain severity, response, age, clinical condition, and other medications. Buprenex is for administration by healthcare professionals, not for unsupervised self-injection.

Concurrent use with benzodiazepines, alcohol, sedatives, general anesthetics, muscle relaxants, or other opioids may increase the risk of profound sedation, respiratory depression, coma, and death. CYP3A4 inhibitors, including certain azole antifungals and macrolide antibiotics, may increase buprenorphine exposure. CYP3A4 inducers, such as rifampin and carbamazepine, may reduce exposure or alter treatment response. Other medications that lower blood pressure may increase hypotension risk. Review all prescription medicines, over-the-counter products, and supplements before administration.