"trying effexor was the worst decision of my life. i was on celexa for about a year and noticed it becoming less and less effective so i talked with my doctor and he convinced me to try effexor. the first few months i experienced nightmares, cold sweats, grogginess, lack of motivation, and memory loss. after 6 months i wasn&#039;t even the same person anymore. i had no emotion, no sex drive, and completely lost all hope. the only reason i stayed on it was because i knew the withdrawal was so miserable. a couple months ago i had an incident where i attempted suicide and had no choice but to switch medications. it took me about a month to get off the effexor and the withdrawal was absolute misery. please, if you have a choice do not try effexor."