“I’m thinking about re-starting vitamin K2 supplements, and wondered which form you recommend (MK4 or 7 or both)? I have trouble with the MK7 causing heart palpitations, so I was only able to take a low dose every couple of days (used the LEF K complex) and that was a bit too strong. The other problem was the cost of it and it’s short half-life. I know that many studies show the importance of K2 but I was never able to determine if both should be taken and how to avoid the heart problems I have.”
- Pam F. via email
First, let’s quickly recap why vitamin K, and specifically vitamin K2, is recognized as an essential bone health supplement nutrient today:For bone health, more than 109 mg a day of Vitamin K is associated with improved bone density and lower risks of fracture - even in people with already low bone density.