question: Hi doctor, My son is 2.5 years old. For a week he is complaining of stomach pain. As of now he is totally fine, but he is not ready to eat anything. Also, when we give him buffalo milk he takes it, but many a times he vomits. Whereas if we give him NAN 4 he is fine. Very fresh and active but sweats a lot due to low diet. Any advice on diet or any health medicines would be helpful.