Propoxyphene hydrochloride is an odorless, white crystalline powder with a bitter taste. It is freely soluble in water. Chemically, it is alpha (+)-4-(Dimethylamino)-3-methyl-1,2-diphenyl-2-butanol Propionate Hydrochloride.

Fiorinal® with Codeine (Butalbital, Aspirin, Caffeine, and Codeine Phosphate Capsules, USP) is supplied in capsule form for oral administration.

Soma Compound (carisoprodol and aspirin tablets, USP) is a fixed-dose combination product containing the following two products:

TALWIN Compound (pentazocine and aspirin) is a combination of pentazocine hydrochloride, USP, equivalent to 12.5 mg base and aspirin, USP, 325 mg.

Soma Compound with Codeine (carisoprodol, aspirin, and codeine phosphate tablets) (carisoprodol, aspirin, and codeine phosphate tablets, USP) is a fixed-dose combination product containing the following three products: