The rate of drug relapse varies depending on the individual and the substance they were using, as well as the type and length of treatment received. According to the National Institute on Drug Abuse (NIDA), drug relapse rates are estimated to be between 40% and 60%. However, it’s important to note that addiction is a chronic disease, and relapse is often a normal part of the recovery process. With ongoing treatment and support, many people are able to achieve long-term sobriety.