Vecuronium bromide for injection is a nondepolarizing neuromuscular blocking agent of intermediate duration, chemically designated as 1-(3α,17β-Dihydroxy-2β-piperidino-5α-androstan-16β,5α-yl)-1-methylpiperidinium bromide, diacetate. Vecuronium bromide for injection is prepared as a solution and lyophilized in its final container. The structural formula is:
Its chemical formula is C34H57BrN2O4 with molecular weight 637.73.
Vecuronium bromide is supplied as a sterile nonpyrogenic freeze-dried buffered cake of very fine microscopic crystalline particles for intravenous injection only. Each 10 mL vial contains 10 mg vecuronium bromide, 20.75 mg citric acid anhydrous, 16.25 mg sodium phosphate dibasic anhydrous, 97 mg mannitol (to adjust tonicity), sodium hydroxide and/or phosphoric acid to buffer and adjust to a pH of 4 (3.5 to 4.5). Each 20 mL vial contains 20 mg of vecuronium bromide, 41.5 mg citric acid anhydrous, 32.5 mg sodium phosphate dibasic anhydrous, 194 mg mannitol (to adjust tonicity), sodium hydroxide and/or phosphoric acid to buffer and adjust to a pH of 4 (3.5 to 4.5). Bacteriostatic water for injection, USP when used contains BENZYL ALCOHOL, WHICH IS NOT FOR USE IN NEWBORNS.