"i started taking mirtazapine 30mg five weeks ago and it has made such a difference to me. i also take 20mg paxil but that had stopped helping with my depression. i have an anxiety disorder and also obsessive compulsive disorder, pure o.  i was zonked out by the mirtazapine for about 10 days but after that the fog cleared and right from the word go my anxiety practically disappeared. i have had increased appetite and gained some weight but nothing to worry about, probably about 8 pounds. i am small and weigh now about 139 pounds.  the other side effect which was annoying was a bloated stomach and swollen feet but that has gone away over the past week. i would seriously give this medicine a good few months if you are suffering as i was, give it time."