Use only those medicines prescribed by a physician. They replace lost fluids and minerals. Most stores in the U.S. sell rehydration fluids in the infant section. In third world countries, many health agencies stock packets of salts to mix with water. Give the child small amounts to drink often.
Small amounts decrease the likelihood of vomiting .
One guideline is to give one cup of fluid for every loose stool passed. Have a health care provider exam the child if diarrhea persists or other symptoms occur. For foreign travel, check with embassies or consulate offices. Many guide books list organizations that help travelers.