Hello and welcome to HCM
The fever might be due to viral fever
. Continue Calpol
for one more day, if fever still continue than consult your doctor and get a antibiotic course. You can give ORS or any other electrolyte powder but it is indicates in loose stools or electrolyte imbalance
. This is no side effect if you give this. For alternate, you can give sugar and salt mixed in boiled or RO filtered water.
If your son has cold or cough
, than protect him from changing climate and change his wet clothes regularly.
Consult your doctor if fever continues.