Since I started on low dose of cymbalta about 2 years ago, at 20 mg a day, i have gained about 18 pounts. i'm a small woman and this is a lot, i used t ofit into my high school close without even trying, now i have outgrown all clothes. any one else have this problelm? also, very low libido since cymbalta. anyone know any alternatives that are no tprescription? iu take it fo the offlabel fibro.