This means that you are having a certain kind of diarrhea that may need to be treated by your doctor. Loperamide is available without a prescription. Buy some of it ahead of time, so that you will have it on hand in case it is needed. To interrupt your sleep less often, you may take 4 mg of loperamide every four hours during the night. Continue taking loperamide, day and night, until you have not had any diarrhea for twelve hours.
Diarrhea causes loss of body fluid, which can lead to dehydration, a serious medical problem.
To prevent this, it is very important that you replace the lost fluid. While you have diarrhea, and for a day or two after the diarrhea has stopped, drink plenty of clear liquids , such as ginger ale, caffeine-free cola, decaffeinated tea, and broth. Ask your doctor about the amount of liquid you should be drinking every day. Follow your doctor's directions very carefully. Because alcohol and caffeine can increase fluid loss, you should not drink beverages or take any medicines that contain them while you have diarrhea.