Cope with having diarrhea. Stay hydrated by drinking water, juice, and broth throughout the day.
Get plenty of rest by staying home from work or school and staying in bed. Try over-the-counter anti-diarrheal medicines like Pepto-Bismol or Immodium A-D to help relieve symptoms. Follow a clear liquid diet of water, broth, juice, and sports drinks until you can handle solid food, then introduce the BRAT diet (bananas, rice, applesauce, and toast).
Ease nausea and vomiting with a gentle diet. Stay hydrated — like with diarrhea, dehydration is the biggest risk when you’re sick with vomiting. Follow the same guidelines as when you have diarrhea. If you can eat without vomiting, eat small amounts of bland foods like toast, crackers, and jell-o. Once you can keep these down, add rice, cereal, and fruit to your diet. Increase what you eat slowly as your illness improves.
Seek medical care if you become dehydrated. If you have diarrhea or vomiting that lasts over 24 hours, or you cannot keep any liquids down for over 12 hours, see your doctor right away. Seek emergency care if you have any signs or symptoms of dehydration, such as:
See your doctor if you have pain or a high fever. Signs that your stomach problems necessitate medical care include a fever of 102°F (39°C) or higher, or moderate to severe stomach, rectal, or chest pain. If you have blood in your stool or vomit, or your stool is black and tarry, see your doctor right away.
Unblock constipation naturally, if possible. Try eating prunes or yogurt containing live cultures. Hydrate well and get regular exercise. Increase the fiber in your diet with vegetables and whole grains. Consult your doctor if you do not have a bowel movement for over a week — they may suggest castor oil, over-the-counter milk of magnesia, or a laxative.