Combination of Topamax & Sandomigran

Hi, I’m new to the forum - I wanted to know if anyone else has taken a combination of Topamax and Sandomigran?? and if it has or has not been a good combination for them. I have been on Sandomigran for around 11 mths, I was on 8 tabs but dropped to 5 tabs due to weight gain with that I take 100mg of Topamax. I have tried searching for others on a similar combination but so far have had no luck. Hope someone out there can give me some insight on how they went with this combination. Thanks -