http://www.medications.com/effect/view/26254 night sweats, hot flash, panic feeling, fast heart rate, headache. AND THAT WAS IN ONE DAY! Felt spacey and out of this world. No joke. It started out good then it was like whamo! I took it on Thursday and Thursday night I was in the ER having an EKG done a Sat, 19 Apr 2008 23:29:35 -0400 http://www.medications.com/effect/view/26254?item=7448 I've been on Effexor XR for about a year. I had to stop taking the medication when I found out I was pregnant with my second child. It's a bitch to come off this medication . The first time I started taking Effexor XR, I was on it for about 6 months prior http://www.medications.com/effect/view/26254?item=7448