Vyvanse and Weight Loss—Is This Normal?

Hi everyone! I hope it’s okay to post here—if not, let me know. I have both bipolar 2 and ADHD, and I’ve been on Vyvanse for almost two years now. It works well with my mood stabilizers, but I’ve noticed something strange recently.

My dose was increased a bit a couple of months ago, and since then, I’ve been losing a lot of weight. I don’t have much of an appetite anymore. My typical day is coffee and a small breakfast, maybe a snack, and dinner, but I rarely finish any of my meals. Even my jeans that fit two weeks ago are now saggy—especially around my butt (why does it have to go there?!).

I’m wondering: has anyone else experienced this on Vyvanse? Could it just be a side effect of the meds, or should I be worried about an eating disorder?

Thanks in advance for any advice or shared experiences!