brixadi - Medication Listings

BRIXADI (buprenorphine) extended-release injection is a sterile, yellowish to yellow clear liquid provided in a single-dose, pre-filled syringe intended for subcutaneous injection only . BRIXADI is designed to deliver buprenorphine at a controlled rate over either one week or one month. The active ingredient in BRIXADI is buprenorphine free base, a partial opioid agonist. BRIXADI is provided in multiple doses with two durations (weekly and monthly). BRIXADI (weekly; 8, 16, 24, 32 mg) consists of 50 mg/mL buprenorphine. The inactive ingredients include dehydrated alcohol (12% v/v), glycerol dioleate (43% v/v), and soybean phosphatidylcholine (41% w/v). BRIXADI (monthly; 64, 96, 128 mg) consists of 356 mg/mL buprenorphine. The inactive ingredients include glycerol dioleate (24% v/v), methylpyrrolidone (31% v/v), and soybean phosphatidylcholine (15% w/v). Upon injection, BRIXADI spontaneously transforms from a low viscous solution to a liquid crystalline gel that encapsulates buprenorphine and releases it at a steady rate as the depot biodegrades. Different drug product strengths, or doses, are accomplished by different syringe fill volumes [see Dosage Forms and Strengths (3) ]. The molecular weight of buprenorphine free base is 467.65 g/mol, and its molecular formula is C29H41NO4. Chemically, buprenorphine is: (2S)-2-[17-(Cyclopropylmethyl)-4,5α-epoxy-3-hydroxy-6α,14-ethano-14α-morphinan-7α-yl]-3,3-dimethylbutan-2-ol. The structural formula is: Chemical Structure