Vitamin K2

Last update: 2.5.2017.

Vitamin K2

Supplement Watch - Vitamin K2

Other name(s) for Vitamin K2

The menaquinones

General information for Vitamin K2

Vitamin K2 is actually a group of vchemical compounds called menaquinones. Menaquinones are abbreviated MK-n, where M stands for menaquinone, the K stands for vitamin K, and the n represents the number of isoprenoid side chain residues. There are several types of K2 vitamins. The most studied are MK-4 and MK-7.

Solubility of Vitamin K2


Take care when supplementing with fat soluble vitamins.

Benefits of Vitamin K2

Activates proteins and calcium essential to blood clottingMay help prevent hip fractures

Deficiency symptoms / disease

K2 deficiency is linked to
coronary heart disease
aortic calcification
general mortality.

Overdose symptoms / disease

No known toxicity is associated with high doses of K1 or K1 forms of vitamin K. For this reason no tolerable upper intake level has been set however allergic reaction from supplementation is possible.

FDA information for Vitamin K2

(Daily value/Recommended dietary allowance/Adequate intake)

Recommended intakes of nutrients vary by age and gender and are known as Recommended Dietary Allowances (RDAs) and Adequate Intakes (AIs). However, one value for each nutrient, known as the Daily Value (DV), is selected for the labels of dietary supplements and foods. A DV is often, but not always, similar to one's RDA or AI for that nutrient. DVs were developed by the U.S. Food and Drug Administration (FDA) to help consumers determine the level of various nutrients in a standard serving of food in relation to their approximate requirement for it. The label actually provides the %DV so that you can see how much (what percentage) a serving of the product contributes to reaching the DV.

Data from U.S. Department of Health & Human Services, National Institutes of Health, Daily values.

Look at daily value in the main vitamin page.

Food sources for Vitamin K2

Look at food sources in the main vitamin page

Vitamin K2 is obtained from meats, cheeses, and eggs.

External links

Wikipedia-Vitamin K2 MedlinePlus-Vitamin K