1950-1970 / Clinical

Side Effects and Complications

Sidney Cohen surveyed researchers at the VA Neuropsychiatric Hospital who had administered LSD or mescaline to nearly 5,000 subjects across more than 25,000 doses. He found no cases of serious prolonged physical harm and quantified low rates of suicide attempts, psychotic breaks over 48 hours, and other adverse effects.

A Chilean psychiatrist's report on harmala alkaloids, ayahuasca-related beta-carbolines, and comparative human experiments with harmaline and mescaline at the University of Chile.