Orphenadrine and propoxyphene.
D000328:Adult; D011431:Dextropropoxyphene / Q000009:adverse effects / Q000494:pharmacology*; D004357:Drug Synergism; D006801:Humans; D008297:Male; D009966:Orphenadrine / Q000009:adverse effects / Q000494:pharmacology*
D009966:Orphenadrine; D011431:Dextropropoxyphene