"i took 1200 mg of gabapentin for a year for anxiety after stopping  citalopram and diazepam. it had no effect at all. i felt the same before i started it, when i was on it, and after i had stopped it. it didn&#039;t even have side effects. it did nothing. i have been on numerous ssri&#039;s, seroquel, lithium, lamictal and benzos for bipolar 2 with episodes of depressive/anxiety. thankfully, the government disability insurance paid for gabapentin and not me."