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G D Olsen, H A Wendel, J D Livermore, R M Leger, R K Lynn, N Gerber
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...
February 1977: Clinical Pharmacology and Therapeutics
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