Because 200 μg LSD was nominally more effective than 30 mg psilocybin and because 100 μg LSD showed a nearly significant lower effect on this scale compared with 200 μg LSD, we suggest that this is a dose effect rather than a substance-specific effect.
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Direct comparison of the acute effects of lysergic acid diethylamide and psilocybin in a double-blind placebo-controlled study in healthy subjects.
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