I just switched from Pristiq to citalopram yesterday. The Pristiq wasn't working anymore and was waaaayyyy too expensive. Is citalopram a good antidepressant? My doctor said that is the one he prescribes the most because it has the best results with his patients. It's a free clinic so I'm sure he gets a lot of patients. I did some research on citalopram on my own but I got conflicting reviews. Will it cause weight gain or weight loss? I gained about forty pounds in the last three- four years on Pristiq. I don't want to gain anymore. I feel like a fat pig.