Best Detox Centre in Delhi For Alcohol, Drug Addiction and Other Addiction Treatment How Long Does Detox Last? Detox typically lasts between five and 12 days, but sometimes longer, depending on the severity and the duration of addiction. In any case, detox treatment cleanses the body of harmful substances but does not rid the individual of addiction. Patients who choose to stay and continue the drug or alcohol rehabilitation are more likely to remain clean and sober in the long term. 1-Limited Seats Available!!! 2-Benefits of 15 Days Detox Plan? 3-Flushes out unwanted toxins completely from the body 4-Helps deal with withdrawal symptoms safely