"my pcp prescribed pristiq for my depression, anxiety, mood issues etc. he told me that the drug takes a few weeks before you could see a difference but i feel like i experienced everything the first day i took the drug. although my mood and energy improved and felt better overall the side effects were so severe i decided to discontinue after the first day. my side effects started with heart palpitations, sweating, dizziness and a faint feeling. this later subsided but turned into nausea and loss of appetite i couldn&#039;t eat anything that day and even water made me gag. that night i slept for a total of 3 hours i couldn&#039;t stay asleep and the time i did fall asleep it felt like i wasn&#039;t asleep at all. my body felt numb and my heart was racing."