Science-Based Nutrition MenaQ7 - Natural Vitamin K2 Helps Support Blood Vessel Health Helps Promote Healthy Circulation Dietary Supplement Vegan Non-GMO Gluten Free Soy Free Doctor's Best Vein Support contains DiosVein Diosmin, used for decades for vascular support in Europe. Derived from sweet orange and rich in bioflavonoids, DiosVein has been shown in clinical studies to support blood vessel health and promote normal circulatory function. Further studies have found that Diosmin in combination with the flavonoid hesperidin supports healthy venous function. Vein Support also contains MenaQ7, a long-acting, natural form of vitamin K2 purified from fermented chickpeas. Adequate K2 is important for healthy blood vessel function and MenaQ7 is a long-acting form shown to support cardiovascular health.