Brinsupri Effects On Weight

I’ve been on Brinsupri for a little over 2 months . I have slowly been gaining weight , up 5lbs now. The issue is, I don’t need to gain weight , and I’m trying to figure what is going on. I eat well and exercise . Has anyone experienced weight gain while on Brinsupri ? I know you can lose weight from BE, and then gain weight when doing better . But that’s not my issue..,