Cold and cough is normal phenomenon in children. Please don't use combinations of drugs. Use paractamol and benadryl 1tsf sos. Not more than twice. A day. Lot of fluids. Give soft diet, like khichri , Custard , banana. I am aware the child is having cold and cough , still go for banana mash with custard.. Give lot of fluids to prevent dehydration.
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Next Steps
Immunization , play with child , make him active, give coconut water.
Health Tips
Don't forget immunization, take care of mosquito, to prevent agaist malaria and dengue. Take care of all precautions against Covid. DONOT TAKE IT LIGHLY.