"i have generalized anxiety disorder and panic disorder going on ten years now. i&#039;ve been on zoloft the entire time. i had a bad relapse of symptoms this year while on zoloft. i bumped it up to 200 mg and began taking gabapentin 300mg/day. i&#039;ve been doing better, but i&#039;m still working on getting my confidence up after this recent relapse.  last week i started having anxiety symptoms for a couple of days, so i bumped the gabapentin to 600mg/day. my anxiety is now better so far. i&#039;ve noticed a side effect on this dose that i didn&#039;t get on the 300 mg... i&#039;ve had spells of depression the past few days. i think those will pass as my body becomes used to the new dose. depression is listed as a possible side effect. i just hope this medicine doesn&#039;t poop out on me."