药物信息为TALWIN Nxpentazocine and naloxonehydrochlorides, USPAnalgesic for Oral Use Only (Sanofi-Synthelabo Inc.): DESCRIPTION

TALWIN Nx contains pentazocine hydrochloride, USP, equivalent to 50 mg base and is a member of the benzazocine series (also known as the benzomorphan series), and Naloxone hydrochloride, USP, equivalent to 0.5 mg base.

TALWIN Nx is an analgesic for oral administration.

Chemically, pentazocine hydrochloride is 1,2,3,4,5,6-Hexahydro-6,11-dimethyl-3-(3-methyl-2-butenyl)-2,6-methano-3-benzazocin-8-ol hydrochloride, a white, crystalline substance soluble in acidic aqueous solutions, and has the following structural formula:

Chemically, naloxone hydrochloride is Morphinan-6-one,4,5-epoxy-3,14-dihydroxy-17-(2-propenyl)-, hydrochloride, (5α)-. It is a slightly off-white powder, and is soluble in water and dilute acids, and has the following structural formula:

Inactive Ingredients: Colloidal Silicon Dioxide, Dibasic Calcium Phosphate, D&C Yellow #10, FD&C Yellow #6, Magnesium Stearate, Microcrystalline Cellulose, Sodium Lauryl Sulfate, Starch.