I have been on phentermine for 12 months for a loss of 55 lbs. To get me to that last 25 lbs., my doctor prescribed me Topiramate 25mg. I have had some bad stomach pains, and very light headed. I was advised this drug is normally for children ADHD? But I am now reading it was primarily for anti epilepsy. All are in agreement when combined with Phentermine its a medication used for weight loss. What are the side effects?