LSD Medical Uses. Research into LSD for medical use has been going on for a very long time. LSD played a valuable role in the work of psychiatrists. During the 1950s and 60s more than 40,000 psychiatric patients received LSD as part of their treatment. These were people diagnosed as autistic, obsessive compulsive, depressed, and schizophrenic received. They received LSD in the form of Sandoz Delysid tablets. These were also given to sexually perverted people such as homosexuals. During these times, psychiatrists treated homosexuality as a mental illness.