It sounds like you are having bad
side effects from the citalopram. I would suggest that you contact your Dr. asap, and get off that med., from what you have written, it sounds like you dont need something to make you more hyper, you need just the opposite.
I am taking Quetiapine, which slows me down, and stops my mind from racing, and actually didnt effect my appetite, however you will experience weight gain.
I strongly suggest that you contact your Dr.