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Discontinued Warning IconPlease Note: This Brand Name drug is no longer available in the US.
(Generic versions may still be available.)

NUROMAX
(doxacurium chloride) Injection

This drug should be administered only by adequately trained individuals familiar with its actions, characteristics, and hazards.

NOT FOR USE IN NEONATES
CONTAINS BENZYL ALCOHOL

DRUG DESCRIPTION

NUROMAX (doxacurium chloride) is a long-acting, nondepolarizing skeletal muscle relaxant for intravenous administration. Doxacurium chloride is [1α,2β(1'S*,2'R*)]-2,2' -[(1,4-dioxo-1,4­butanediyl)bis(oxy-3,1-propanediyl)]bis[1,2,3,4-tetrahydro-6,7,8-trimethoxy-2- methyl-1-[(3,4,5­trimethoxyphenyl)methyl]isoquinolinium] dichloride (meso form). The molecular formula is C56H78CI2N2O16 and the molecular weight is 1106.14. The compound does not partition into the 1­octanol phase of a distilled water/ 1-octanol system, i.e., the n-octanol:water partition coefficient is 0.

Doxacurium chloride is a mixture of three trans, trans stereoisomers, a dl pair [(1R,1'R ,2S,2'S ) and (1S,1'S ,2R,2'R )] and a meso form (1R,1'S,2S,2'R). The meso form is illustrated below:

NUROMAX®
(doxacurium chloride) Structural Formula Illustration

NUROMAX (doxacurium chloride) Injection is a sterile, nonpyrogenic aqueous solution (pH 3.9 to 5.0) containing doxacurium chloride equivalent to 1 mg/mL doxacurium in Water for Injection. Hydrochloric acid may have been added to adjust pH. NUROMAX (doxacurium chloride) Injection contains 0.9% w/v benzyl alcohol.

Last reviewed on RxList: 1/4/2011
This monograph has been modified to include the generic and brand name in many instances.