Harvard Heart Letter

Biotin supplements may interfere with test to diagnose heart attack

Research we’re watching Taking supplements that contain high levels of biotin (vitamin B7) can lead to falsely low results on a blood test used to detect heart attacks, according to an FDA warning issued late last year. For adults, the recommended dietary allowance (RDA) for biotin is 0.03 milligrams (mg), which is easily obtained through a healthy, varied diet. Many multivitamins and prenatal vitamins contain far more biotin than the RDA. And some supplements…

To continue reading this article you must be registered.

Get Licensed Content to Harvard Health

If you are interested in licensing content from Harvard Health Publications, please contact us using our online form. Our licensing and business development professionals will help you leverage consumer health content from Harvard Medical School as a clear differentiator in helping achieve your business goals.

Contact Us

Customer Log In