Studies on lysergic acid diethylamide (LSD-25).  I.  Effects in former morphine addicts and development of tolerance during chronic intoxication.
D004361:Drug Tolerance; D006801:Humans; D008238:Lysergic Acid Diethylamide / Q000494:pharmacology*; D009021:Morphine Dependence; D009022:Morphine Derivatives
D009022:Morphine Derivatives; D008238:Lysergic Acid Diethylamide
LYSERGIC ACID DIETHYLAMIDE/effects; MORPHINE/addiction