http://www.medications.com/effect/view/40729 I am a 25 year old woman with 3 kids. I was prescribed TOPAMAX 3 months ago. I am on 150mg a day. My DR. told me to take them at night before bed and I have to take a TYLENOL PM with it so I can sleep at night and drink 64 oz of water a day and 8 oz of citu