My Son Was Placed On 20 Mg Of Paxil Today.

My son was placed on 20 mg of paxil today. I gave him one when we got home and he went to sleep. since he woke he as been dizzy, nauseous, jittery, and vomited. he has never been on anything like this and i was wo dering if it would be ok to give him half a 20 mg pill for a week then the 20 mg pill to help ease him into the medication.