"i have been on pristiq for 9 months now. i had the night sweats in the beginning and they went away after about 3 weeks. i thought the only other side effect i&#039;ve experienced was when i would forget to take a pill. the next day i would be dizzy and would snap at people. the following day would be back to normal. i also have a bite guard to help with the jaw at night. i don&#039;t use it that often. i noticed in the past week my depression returning slightly. i was confused because pristiq has worked wonders for me. realized i have a sensitivity to caffeine. i love dr. pepper and quit drinking it when i started pristiq. started drinking dp again and had stomach problems and depression. so no more caffeine! i take 50mg."