It is a common problem in this age group and ur choice of medicine is right . The dose is 7 drops three times a day. If the child also has noisy breathing or nose blockage which is common during this illness then give nasivion mini nasal drops 1 drop in both nostrils three times a day . It will ease his discomfort.
Next Steps
If the child develops fever and if the cough doesn’t subside , kindly consult so we can plan his treatemnet systematically