Can Diarrhea Harm My Health?Yes. Ongoing diarrhea causes the body to lose large amounts of water and nutrients. If you have watery stools more than three times a day and you are not drinking enough fluids, you could become dehydrated, which can cause serious complications if not treated.
How Is Diarrhea Treated?If you have a mild case of diarrhea, you can just let it run its course, or you can treat it with an over-the-counter medicine.Common brand names include Pepto-Bismol, Imodium A-D and Kaopectate, which are available as liquids or tablets. Follow the instructions on the package.
In addition, you should drink at least six 8-ounce glasses of fluid per day. Choose fruit juice without pulp, broth or soda (without caffeine). Chicken broth (without the fat), tea with honey and sports drinks are also good choices. Instead of drinking liquids with your meals, drink liquids between meals. Drink small amounts of fluids frequently.
http://www.webmd.com/content/article/90/100639.htmHome Care Drink plenty of fluid to avoid becoming dehydrated. Start with sips of any fluid other than caffeinated beverages. Milk may prolong loose stools, but also provides needed fluids and nourishment. Drinking milk may be fine for mild diarrhea. For moderate and severe diarrhea, electrolyte solutions available in drugstores are usually best.
Active cultures of beneficial bacteria (probiotics) make diarrhea less severe and shorten its duration. Probiotics can be found in yogurt with active or live cultures and in supplements.
Foods like rice, dry toast, and bananas can sometimes help with diarrhea.
Avoid over-the-counter anti-diarrhea medications unless specifically instructed to use one by your doctor. Certain infections can be made worse by these drugs. When you have diarrhea, your body is trying to get rid of whatever food, virus, or other bug is causing it. The medicine interferes with this process.
Rest.
http://www.nlm.nih.gov/medlineplus/ency/article/003126.htm