If you had become too dependent on alcohol that a day wouldn't pass without you drinking, then yes you need this. While detoxifying or removing alcohol from your system can be done by yourself, this is not advised as it can be risky and dangerous. It is still a lot better and safer if you do it with a professional at an alcohol rehab as they not just offer detox programs, but holistic programs for drug-dependent persons. Doing this will keep you away from risks brought about by withdrawal symptoms. A detox program is very important as it supports and guides you during the withdrawal phase. The symptoms may last for a day or 3 which makes it necessary to detox for medical and healthcare.