[montecarl]

For clarity, loperamide, sold under the brand name Imodium, is an anti diarrhea medication. It is an opioid; however, it does not readily cross the blood-brain barrier. It only acts on the opioid receptors in the large intestine and slows the movement of food. In very high concentrations it may get into the brain.

[lotsofpulp]

If I go to a developing country where I cannot guarantee access to a bathroom, I pop one or two of these every morning to keep me regular.