Diarrhea is an unpleasant and dehydrating symptom of a variety of ailments. CVS carries a selection of anti-diarrhea medicine to help you feel better fast. Diarrhea medication is available in tablet, caplet, capsule, and liquid form. Over the counter medicine for diarrhea is generally safe, but it is always a good idea to check with your doctor before taking any new medication. Because diarrhea can cause dehydration, it is important to replace fluids and minerals with an electrolyte solution. For on-the-go anti-diarrhea medicine, try an easily portable solution like Pepto-Bismol To-Go.