Its for my 3 year old girl?

Doctor can examine: A simple tummy ache with symptoms like nausea, vomiting, or diarrhea, whether at home or traveling, may be from a virus infection, bacteria infection, or contaminated food. A normal child, not on medications, usually recovers easily. Taking just a Pedialyte popsicle or 2 oz of Pedialyte hourly for a day may settle things down. Doctor can check, looking for anything serious.