My heart went to 197 beats per minute. I had taken Chantix for 3 months, Stopped smoking. 3 days after not taking the medication, I felt numb, light headed. I thought I was having a panic attack. My heart rate went to 197. My blood pressure dropped low. I could see my heart beating through my shirt. It was very scary. I have started smoking again. When I was taking the medication it did help my cravings. That was a short term fix for me. I will never take this medicine again. I'm not sure it was a panic attack or the Chantix side effect. I'm not willing to find out by taking the medicine again. I thought I was going to die that day!!!! Hope more people will post a reply if they had this side effect.
I took chantix last oct (07) for about three weeks and quit smoking but started having breathing difficulties immediately and then started having heart palpitations - those have never gone away...about every other day I have a really bad time with my heart going crazy...I can see it jumping in my chest - this is accompanied with chest pain and often numbness of the right arm...resting heart rate will be 180+...after about three months of not smoking the cravings came back with a vengence so I started smoking again...appear to be stuck with the heart and breathing issues...have not wanted to go to the dr. but know I have to.