I took Zicam spray and then rapidmelts for a cold last October. It was totally effective in preventing the congestion, cough, etc. No one would have known I had a cold. BUT, I had NO energy, was barely able to walk around and I have not been myself ever since. A couple weeks ago I had a minor heart attack, determined by my blood enzymes, which peaked at 10. The angiogram showed almost no blockage even thought I'm 75 years old. The cardiologist says i have an exceptionally strong heartbeat. My EKG's are perfect. So, do you think it could be a result of the Zycam? I tend to be very sensitive to medications. I once had heart papitations and arythmia from a singe Actifed capsul. And my blood pressure flatlined from nitroglycerin.