Hello, I've Been On Birth Control For Years Now (starting

Hello, I've been on birth control for years now (starting with ortho-tri-cyclen) when I was fourteen. I just turned eighteen not too long ago, and I have been on (Camila aka Nora-Be) for about a year. I just purchased Xenadrine pills today. I know the thoughts of diet pills differ from everyone, but I just want it as an additional boost onto my workouts. I was wondering if there were any sort of ingredients that could clash with my birth control.