Thanks Norman, but as i said, I'm positive I don't eat more. The adderall suppresses my appetite to the point where I have gone an entire day without eating and not realize it. I definitely think some people experience weight gain due to being able to eat more once their GERD is under control, and that's what makes the most sense, but I have also been reading some things about people experiencing weight gain without an increase in caloric intake, so that's what I'm inquiring about. I know that some meds can cause weight gain (for example, years ago when I took amitriptyline for sleeping I gained 8 lbs in a week, which is impossible to do even if I was eating more because I'd literally have to have been eating thousands of extra calories a day. You need to eat 3500 calories and not burn it off to gain a pound, and to gain 8 pounds I'd have to have eaten 28,000 extra calories over and above what I burned off that week. Even considering some of that weight was water, that's still very difficult for me to do, especially now that my appetite is so small I rarely eat over 1200 calories a day and that's only when I force myself to eat.) I'm 5'3" and weigh under 115 pounds so I'm not panicking over weight gain from prilosec, but since I've read that it can happen and since I've gained 5 pounds with absolutely no changes to my daily routine I'm just exploring what could possibly have caused it.