My 13 year old son took Topamax for 5 months for migraine prevention. The day he started taking it, the migraines stopped. We thought it was a miracle drug. After 2 months he was experiencing nausea and stomach aches for a couple days at a time. These then increased to 5 or six days of nausea and a couple days of feeling fine. He was prescribed medication to help with the nausea but nothing worked. On the fifth month he was in bed for 22 days straight. The neurologist didn't think it was the Topamax, but I insisted he be weaned off. After 8 days of no Topamax, the nausea finally stopped, the migraines returned. The migraines are more manageable than the constant nausea. So no more Topamax!