Diarrhea usually lasts one to three days and often improves with rest and adequate fluids. Mild cases are commonly caused by viral infections, food intolerance, or temporary digestive irritation. Drinking oral rehydration solutions and eating light foods like bananas, rice, applesauce, and toast can help recovery. If symptoms continue longer than three to five days, become severe, or include fever or dehydration, medical advice is recommended. Some bacterial infections may require antibiotics prescribed by a doctor. Pharmacies supplying cephalexin capsules wholesale sometimes distribute antibiotics used for certain bacterial conditions, though they are not typically used for routine viral diarrhea cases.