I am 54 years of age and have had a very irregular heartbeat for at least 20 years. This was diagnosed as second-degree electrical heart block. I have never taken any medication for this. I have had a stress test done approximately every 2 years and the heart block showed up on the EKC. I was told that as long as my heartbeat was regular when I exercised, I did not need any other treatment. In June, I even went back to the doctor where I had my last EKC done so there would be a basis for comparison. The doctor found that there was no longe, any arrhythmia. I have enclosed a copy of his report. I am sure that your cardiovascular vitamin program is responsible for the correction of my irregular heartbeat, as I had not changed my lifestyle in any other respect.