Mirtazapine
"I've been on Effexor for several years and suffered severe sexual effects so went to the doc and he started me on Remeron. For the last three years I've been training cardio 5-6 times  a week, had lost 10 kg and feeling quite proud of my body. Now at just over three months on Remeron I started feeling my clothes getting tighter, am feeling fat, bloated and lethargic. I can't train with the intensity I am  used to and just want to go to bed earlier and earlier. I weighed myself the other day and to my horror found I'd put on 11 kg. I don't feel I've been eating much more than I used to. Of course the realization that I've lost everything I've worked for in recent years has made me feel pretty bad, and  I'm not sure I want to continue."