title: Lack of toxicity of high dose propoxyphene napsylate when used for maintenance treatment of addiction.
mesh_terms: D002140:California; D011431:Dextropropoxyphene / Q000008:administration & dosage* / Q000009:adverse effects / Q000031:analogs & derivatives*; D006801:Humans; D008297:Male; D008691:Methadone / Q000008:administration & dosage; D008875:Middle Aged; D010414:Pennsylvania; D019966:Substance-Related Disorders / Q000534:rehabilitation*
chemical_list: D011431:Dextropropoxyphene; D008691:Methadone