Please advise if it's gabapetin (1600mg), the alprazolam (1.5-2 mg) or the prozac (fluoxetine) (10 mg) that is keeping me fat?

Weight gain and meds: It is certainly possible that Gabapentin is contributing to weight gain but generally, if you maintain adequate exercise and eat healthy (nourish your body instead of feeding your cravings) you will be able to maintain a healthy weight. Do not ever, stop or change the dose of a medication without your doctors direction. Get some exercise everyday, cut out soda and sweets.