Posted by Roland on July 02, 1999 at 11:45:04
I am male, 41. After lunch, complete with a cola and a strong multi-vitamin, I experienced an irregular heart rhythm where an expected heart beat comes slightly sooner than normal - followed by a between beat time slightly longer than normal - followed by a beat that is very strong, so strong I can feel it in my throat. This continued 1 or 2 times a minute lasting 3 to 15 minutes. As I have not always used caffeine, I suspected it and quit caffeine completely - and the 'flutter' disappeared after a few days. Two weeks later, after my normal 'mild' exercise and glass of juice, I decided to take a full days does of multi-vitamin (Full = 2 tablets - instead of a half-dose twice a day), and 30 minutes later the 'flutter' returned quite strong and closer together, it lasted 10 minutes and then stopped completely. No pain, discomfort or usual indications of a heart attack.
Question: Can off-the-shelf multi-vitamins and mineral supplements cause this? The higher RDA's on the label read: 300mg C, 30mg B-1, 30mg B-2, 30mg B-6, 30mcg B-12 and a slew of minerals and other innocuous products like Pumkin seed meal, Oyster extract and Ginseng powder. What else could cause this? Could I be alergic to something in the vitamin? I am going to stop taking them until I find out.
Medical History: My paternal grand-father died mid-30's of heart failure, my father experienced a heart attack at 51, with by-passes and etc. lived to 69. I'm 6'0' 200 lbs, strong build, much lower than avg blood pressure with a normal resting heart rate of 60-70bpm. No serious illnesses or injuries, no previous heart-lung problems, no medications, no drugs ever, no Alcohol ever, no tobacco ever. Regularly eat a low fat/high protein diet. Computer Analyst 40 hours a week with mild exercise 6 days a week. Married with four small children. (that might do it!)
Posted by CCF CARDIO MD JMF on July 02, 1999 at 12:12:29
Thank you for your question. It is more likely that your extra beats were secondary to your cola and extra caffeine than from your vitamins. However, you should be cautious with any additional supplement whether it be a vitamin or "health food" some of these have a significant side effects and can cause arrhythmias.
I hope this has been useful. I wish you the best of luck. Feel free to write back.
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