Vascular Diseases and Therapeutics publishes 1-year study confirming MenaQ7® Vitamin K2 as MK-7 supplementation improves vascular health

Oslo, Norway and Edison, NJ (7 July 2020) — A new one-year clinical trial has just been published showing that a daily nutritional dose of MenaQ7® Vitamin K2 as MK-7 improved vascular health, adding to the substantial body of evidence confirming MenaQ7® Vitamin K2 is clinically validated to offer cardiovascular support.

According to the authors of “Effect of Menaquinone-7 (vitamin K2) on vascular elasticity in healthy subjects: results from a one-year study”, Matrix Gla-Protein (MGP) is involved in the prevention of arterial calcification. During vitamin K-insufficiency, MGP is produced in its inactive form: dp-ucMGP. Two 3-year intervention studies in the general population have shown that increased vitamin K intake may decrease arterial stiffening, but the difference with placebo became only significant in the third year of treatment. “In the present trial the researchers investigated whether in a pre-selected group of vitamin K-insufficient subjects (men and women) an effect of vitamin K-supplementation may be demonstrated within one year,” the authors wrote.

Completed by the expert researchers at VitaK, the placebo-controlled randomised clinical trial was performed in 243 subjects (40-70 years old) characterized by circulating dp-ucMGP concentrations above the median of the general population. Arterial stiffness was concluded from the carotid-femoral pulse-wave velocity (cfPWV), and other vascular characteristics were measured by echotracking of the common carotid artery. Treatment was performed with either 180 µg/day of Vitamin K2 as MK-7 (as MenaQ7® from NattoPharma) or placebo for one year.

In the total study group, MK-7 induced a significant decrease of both dp-ucMGP and cfPWV. The authors conclude: “High vitamin K intake decreased age-related vascular stiffening. The effects were most obvious in women with poor vitamin K status, and were statistically significant after one year of treatment.”

“This study continues to build the rock-solid argument that MenaQ7 Vitamin K2 – not K1 or other unstudied Vitamin K2 ingredients – delivers important cardiovascular support,” says Hogne Vik, NattoPharma Chief Medical Officer. “In this study, the participants taking MenaQ7 maintained arterial flexibility and the stiffness did not increase, whereas placebo group became stiffer and less flexible.

Vik continues, “These results mirror what we have seen in epidemiological studies, where populations who consume a lot of dietary Vitamin K2 have healthier hearts and more flexible arteries, as well as our groundbreaking three-year study in healthy postmenopausal women. Vitamin K2 is indeed a vital cardiovascular support nutrient, and MenaQ7 is the only K2 as MK-7 clinically proven to do so.”


Vermeer C and Vik H. Effect of Menaquinone-7 (vitamin K2) on vascular elasticity in healthy subjects: results from a one-year study. 2020 Vascul Dis Ther, 5: doi: 10.15761/VDT.1000179.


About NattoPharma and MenaQ7®

NattoPharma ASA, based in Norway, is the world’s leader in vitamin K2 research and development. NattoPharma is the exclusive international supplier of MenaQ7® Vitamin K2 as MK-7, the best documented, vitamin K2 as menaquinone-7 (MK-7) with guaranteed actives and stability, clinical substantiation, and international patents granted and pending; and now the new MenaQ7® Full Spectrum, which delivers menaquinones 6, 7, 8, and 9. The company has a multi-year research and development program to substantiate and discover the health benefits of Vitamin K2 for applications in the marketplace for functional food and dietary supplements. With a global presence, the company established its North American subsidiary, NattoPharma USA, Inc., in Edison, NJ, and NattoPharma R&D Ltd. in Cyprus. For more information, visit or

For more information, please contact:

Kate Quackenbush, NattoPharma Director of Communications

Phone: 609-643-0749 x 220