I was put on heart meds called metoprolol to bring my heart rate down. If I was you I would go to the Er so they can bring it down. Our heart rate should never be over 100 or it starts doing damage to our heart I believe. I'm not a dr but that is what they told me. Especially when we r resting doing nothing anything over 100 is alarming to me. When I went to the Er they gave me ativan threw my iv which should normally bring it down but it was not helping me so they then put me on the metoporal which brought it down but now it's going back up so I'm going to the cardiologist on the 6th and he is probably gonna up my dose. Sweet jesus I never thought it would of been this hard to come off of effexor. I hope you do go get checked out. Please keep me informed. Today I was suffering all day with my head and its actually feeling better now but I had to take a xanax and motrin just to slow my mind down. I wish u luck and God bless