Methdone

To study drug safety and the reporting behavior of adverse drug reactions (ADR) related to agents used for opioid replacement therapy (ORT) we conducted a cross-sectional questionnaire-based telephone survey among physicians who provide outpatient ORT in Germany (n=176; response rate=55.7%). Most respondents (n=97/55.1%) reported that they observe ADR related to buprenorphine, (dihydro)codeine, and (levo)methdone rarely (n=38/21.6%), very rarely (n=39/22.2%) or never (n=20/11.4%). Methadone was reported to be most frequently associated with the occurrence of ADR (n=82/46...

The respiratory and pupillary effects of oral l-, d-, and d,l-methadone were studied in healthy male volunteers 21 to 35 yr of age. The mean half-life of drug in blood was 22 hr for racemic methadone, 24 hr for l-methadone, and 25 hr for d-methadone. The effects of d-methadone were not significantly different from the placebo response at a 7.5 mg dose, whereas a 50 and 100 mg dose slightly depressed respiration in one subject each. Both 7.5 mg of l-methadone and 15 mg of d,l-methadone induced intense and sustained respiratory depression and miosis...