For diarrhea with abdominal colic and body aches, focus first on hydration with oral rehydration solution; for symptom relief you can take Oral Rehydration Salts, an antispasmodic like Dicycloverine for cramps, and Paracetamol for body pain. Probiotics may also help recovery. Avoid oily/spicy foods and take light meals. If diarrhea is severe, persistent, or there is fever, dehydration, or blood in stool, consult a doctor promptly.