If a patient who is suffering from diarrhea for 3 days, the doctors can recommend him the BRAT diet which consists of bananas, rice, apple sauce and toast. This light diet will help soothe the patient.
Additionally, the patient must drinks lots of clear water and fresh juices to soothe the symptoms. He should also try to avoid heavy liquids for example caffeine, shakes and etc. Another helpful solution could be an electrolyte solution.
