Triple-blind, randomised, parallel trial (n=56) testing four repeated very low doses of LSD (13 µg or 26 µg) versus placebo in healthy adults 18–40 to assess mood, cognitive performance and responses to emotional tasks.
Randomised, triple-blind, parallel-group study in healthy adults examining repeated very low doses of lysergic acid diethylamide (13 µg and 26 µg) versus placebo across four sessions spaced 3–4 days apart.
Outcomes include mood measures, cognitive performance and emotional task responses; actual enrolment recorded as 56 participants.
Placebo (solution)
Placebo solution
13 µg lysergic acid diethylamide, repeated low-dose schedule
Four repeated low doses at 3–4 day intervals
26 µg lysergic acid diethylamide, repeated low-dose schedule
Four repeated low doses at 3–4 day intervals