Most people with gastroenteritis require no formal treatment. The key to a rapid and safe recovery at home (home remedy) is proper hydration. Home treatment consists of adequate fluid intake so dehydration is prevented. Clear fluids are recommended (Pedialyte especially for young children, Gatorade, PowerAde and other sports drinks), but not fruit juices or milk as they may prolong the symptoms. If dehydration occurs, the patient should be evaluated by a doctor. Many health care professionals choose to begin IV fluids, the treatment of choice for rapid rehydration.
Other medications may be prescribed to reduce the symptoms of gastroenteritis. To reduce vomiting, promethazine (Phenergan), prochlorperazine (Compazine), or ondansetron (Zofran) are often used. Some physicians suggest using these agents only as a suppository or rapidly disintegrating tablet on the tongue since patients may vomit the pills up. Others may prescribe diphenoxylate and atropineomotil (Lomotil) or lopermadine (Imodium) to slow diarrhea while others do not as the drugs may prolong the disease in some individuals. Many doctors recommend no medical treatment for gastroenteritis symptoms as all of the drugs have side effects and if the patient stays well hydrated, the symptoms usually stop soon anyway.
As the gastroenteritis symptoms abate, especially vomiting, doctors may recommend a BRAT diet (bananas, rice, apples and toast) for a day or two before returning to the patient's regular diet. Potatoes, lean meat like chicken and whole grains can help replace nutrients and electrolytes lost with diarrhea.
Patients who have more serious symptoms or other symptoms in addition to gastroenteritis need to be evaluated, diagnosed, and treated by a physician because the patient will likely have a specific disease that will need treatment. The treatment will depend on the cause of the illness (for example, salmonellosis or Clostridium difficile toxin). Antibiotics and other treatments may not be recommended for some of these diseases so an accurate diagnosis of the disease is important. For Clostridium difficile infected patients, antibiotic sensitivity testing may need to be done to determine the most effective antibiotics to use.