In fact, you're likely missing out on key nutrients by only eating fruits or veggies. A given period of drug detoxification will last as long as the withdrawal symptoms persist, and for as long as it takes for the patient to stabilize physically and mentally, according to the NIDA. Patients who opt for medical detox stop taking all substances, including alcohol. Brown rice gives your body plenty of B vitamins, which is a stress reducer. It's very high fiber, will fill you up, will help you sleep, and will flush you out in the morning." "It was extraordinary, a mystical experience.