The human body becomes physically dependent on substances and you need to remove it from your body to let your body heal. This requires supervision as the body may react negatively and can also result in fatalities in severe cases. Some of the best deaddiction centres in India offer detoxification to the patients but some may not have the proper equipment and facilities to administer proper detoxification. So, they simply offer rehabilitation programme. Detoxification and rehabilitation go hand-in-hand for any case of addiction.