Thank you for your query,
I advise you not to use any antibiotic with out your doctor advise.
In most of the diarrheas are due to virus and antibiotic is not required.
You can give sips of ORS, Pedialyte
, coconut water to prevent dehydration
sachets can be given orally.
Maintain his hydration and look for any signs of dehydration.
Consult your Pediatrician
to assess the child and for medication.
Hope I have answered your query.