I have been on viibryd for three days now. My psychiatrist doctor gave me a month supply to see how would I do on viibryd. I am taking the first week of 10 mg of viibryd. I am feeling hungry more often, but from being on viibryd for the first 2 days I have lost 2 lbs so far! Its strange because I feel really hungry at times, but I do my best to control of what I eat, and how much I eat. I'm not sure if its the medication it self making me loose weight even if I feel hungry or what is it?? I also wonder if by the time I hit the 20 mg or maybe the 40 mg would it change my appetite? As anyone experienced this at all? Could it change in my appetite by taking a higher dosage (mg) of viibryd?? Please help! I am also taking amphetamine and the amphetamine would usually make me loose my appetite. But I seriously think that its the medication of viibryd increasing my appetite. Which if it is then I will rather stop, because it will actually make me feel more depressed for gaining more weight.