Vitamin K performs very important functions in the body. One of the functions of vitamin K is the production of proteins involved in blood clotting. Vitamin K is required for the synthesis of pro-clotting proteins known as factors II, VII, IX, and X. Vitamin K is also required for the synthesis of anti-clotting proteins known as proteins C, S, and Z. Outside of the blood, vitamin K is important for bone metabolism.
Vitamin K may also have the following health benefits, which is why it was chosen to be an ingredient in the Ro supplements:
Vascular calcification is a condition that refers to the deposition of calcium on the inside of blood vessels. This causes blood vessels to become stiff, which is a risk factor for coronary heart disease. While the exact role of vitamin K on the development of heart disease is unclear, multiple studies have shown that vitamin K supplementation may lead to decreased coronary artery calcification (1). Studies have also shown that increasing the intake of vitamin K is associated with a reduction in coronary events (2). However, these benefits have only been seen with vitamin K2 and it is unclear whether vitamin K2 is the cause. Vitamin K1 is not associated with improvement in cardiovascular function.
One important note for those with heart disease: Vitamin K directly interacts with warfarin (brand name Coumadin). This is a medication that is commonly prescribed for people with blood clots or atrial fibrillation (also called A-fib). If you are taking warfarin, do not take supplements containing vitamin K without first talking to your healthcare provider.