Drug Efficacy Study Implementation (DESI)

Drug Efficacy Study Implementation (DESI) was a regulatory process by the U.S. Department of Health and Human Services in the 1960s to evaluate the effectiveness of certain drugs already marketed. Its goal was to ensure that these medications genuinely worked for their intended uses. The process involved reviewing existing scientific data and conducting studies if necessary. If a drug was found effective and safe, it remained approved; if not, it could be withdrawn from the market. Overall, DESI aimed to improve drug safety and efficacy standards, ensuring patients received effective treatments.