My son who is 3 years old and weight 12 kgs is suffering with loose motions. Can anyone suggest some medicine for him?

if it's just for a day or two you can try giving plain soft boiled rice mixed with a little curd and water. also, make sure your child is hydrated. you can make a mix of water, a pinch of salt and a spoon of sugar and let your baby have it, as a natural ORS. however, don't delay the visit to the doc, as loosies means your baby will lose precious nutrients from the body.