Loperamide is the active ingredient in Imodium, the over the counter drug that stops diarrhea. Lately, people have been taking it in dangerously high doses to either curb opiate withdrawal symptoms or to obtain the same euphoric feeling they can only get from opiates. Loperamide is technically an opioid because it activates the same receptors as heroin and prescription opiates. When taken as instructed at normal doses, a minute amount is absorbed so very little becomes availa