Vitamin K2 is often discussed in the context of bone and cardiovascular health. It plays a role in calcium metabolism, contributing to the maintenance of normal bone structure and may support cardiovascular function. However, there have been discussions about its potential effects on heart rate and palpitations.

A recent social media comment claimed that vitamin K2, particularly in the MK-7 form, causes heart palpitations. This prompted a deeper dive into available scientific evidence and anecdotal reports.

Although empirical evidence is lacking, some individuals have shared their experiences with vitamin K2 on social media platforms. A number of these personal accounts have mentioned experiencing heart palpitations as a side effect, particularly linked to the MK-7 variant of vitamin K2. However, these reports are anecdotal and should be interpreted with caution.

"I don’t think vitamin K2 supplementation causes dangerous palpitations in most people... if you’re concerned about it, think twice before taking K2 and track if you develop any side effects."

If you are considering taking vitamin K2, it is essential to monitor any unexpected changes in heart rhythm or other side effects. Consulting with a healthcare provider can help determine whether K2 supplementation is appropriate for your specific health needs, particularly if you have existing heart conditions like atrial fibrillation.