Letter: Stability of aspirin in propoxyphene compound dosage forms.
D001241:Aspirin; D002214:Capsules; D011431:Dextropropoxyphene; D004339:Drug Compounding; D004355:Drug Stability; D013607:Tablets
D002214:Capsules; D013607:Tablets; D001241:Aspirin; D011431:Dextropropoxyphene