The duration of ketamine withdrawal can vary depending on factors such as the individual’s level and duration of use, as well as their overall health and other factors. Generally, acute symptoms of ketamine withdrawal may begin within 24 hours of the last use and can last up to several days, with the most intense symptoms typically occurring during the first week. However, some individuals may experience more prolonged withdrawal symptoms, such as cravings, sleep disturbances, and mood changes, for several weeks or even months after quitting ketamine use. It is important to seek professional medical help and support during the detoxification and withdrawal process from ketamine to ensure safety and effective management of symptoms.