Psychiatric drug development is notoriously difficult, with only about successfully transitioning from Phase I to approval.
The FDA examines all data to determine if the drug's benefits outweigh its risks. Download File Drug Development in Psychiatry.sa...
Before human testing, drugs undergo in vitro (test tube) and in vivo (animal) testing to assess basic safety and how the drug is metabolized. Clinical Research (The 4 Phases): Psychiatric drug development is notoriously difficult