That is why attending therapy sessions throughout rehab is an important part of the process. IV therapy will safely and effectively remove the toxins from your body. Tapering comes with the risk of relapse, too, as people doing a taper on their own have access to the drugs they’re addicted to. Generally, for meth, cocaine, heroin and prescription drugs you can detox in a period of 7-10 days. Medical detox can continue while you go through rehab, stay at a sober living house or even live at home. Outpatient