Thank you for your query.
As you have not mentioned the age of your son it is very difficult to suggest the dose of Emset to you. It is very common for children to vomit when their throat is bad and you should not get disturbed. Viral upper respiratory tract
infections take some time to resolve.
I hope I have answered your query to your satisfaction.
Wishing your son an early recovery.
Rajiv K Khandelwal