"doctor put me on pristiq for anxiety.took 3 weeks to get use to it.horrible side effects.excessive sweating, drowsiness(so i took it right before bed), headaches,sometimes felt like i was getting shocked in the brain, i was hungry all the time.after taking this medication for 4 months i was still experiencing drowsiness and all those other side effects listed above. but my anxiety was gone. i stopped taking pristiq due to insurance problems.i had to quit cold turkey.it was the worst 3 days ever.i felt like i drank a bottle of tequila the night before. my withdrawal symptoms felt like a hangover. extremely tired, headache that wouldn&#039;t go away, severely dehydrated, stomach pains, feeling weak and like a noodle, emotional, dizzy spells.etc"