Detox (or detoxification) is the medically supervised process of clearing alcohol, prescription medications, or illicit drugs from the body while managing withdrawal symptoms as safely and comfortably as possible.(Source) The primary goals of detox are to:

• Help your body eliminate drugs or alcohol
• Stabilize your physical and mental health
• Manage withdrawal symptoms and reduce medical risks
• Prepare you to begin a short- or long-term addiction treatment program

Because ongoing substance use changes the brain and body, many people become physically dependent on alcohol or drugs.(Source) When use suddenly stops or is sharply reduced, the body reacts with withdrawal symptoms that can range from mild discomfort to life-threatening complications, depending on the substance, dose, and duration of use.(Source)

For most people who have developed a substance use disorder, medically supervised detox is strongly recommended instead of trying to quit on their own. Medical and addiction professionals can monitor vital signs, provide medications when appropriate, and respond quickly if complications arise.(Source) Experiences with detox vary from person to person, but there are common patterns and symptoms based on the type of substance involved.