Vitamin K (MK7)

Understand Vitamin K Formats: MK7

MK7 (menaquinone-7) is a specific form of vitamin K2 prized for its long-lasting effects on the body. Indeed, unlike other forms of vitamin K2, such as MK4, which are rapidly absorbed and utilized, MK7 stays in the bloodstream for an extended period. This greater bioavailability makes MK7 effective for long-term bone and cardiovascular health benefits. Derived from fermented foods, most notably natto, a traditional Japanese dish made from fermented soybeans, MK7 is also far more stable in the body, offering steady, sustained action. That’s why those looking to maintain healthy levels of vitamin K2 without frequent supplementation tend to go with the MK7 form.

Why Is Vitamin K So Important For Health?

Vitamin K, a fat-soluble vitamin, plays a crucial role in the body's ability to manage calcium and activate specific proteins. Most people associate Vitamin K with its role in blood clotting, which is primarily handled by vitamin K1. However, vitamin K2, especially MK7, offers a different set of benefits. Indeed, vitamin K2 helps direct calcium away from arteries, where it can cause calcification, and into bones, where it strengthens and fortifies the skeleton. Without sufficient vitamin K2, calcium regulation suffers, which can lead to both weakened bones and hardened arteries—a dangerous combination as we age.

Key Benefits Of MK7

• Remains Active In The Body For Several Days (Long Half-Life)
• Smaller Doses Have A Lasting Impact
• Helps Direct Calcium To The Bones
• Improves Bone Mineral Density And Lowers The Risk Of Fractures, Particularly In Postmenopausal Women
• Prevents Calcium From Depositing In The Arteries
• Helps Prevent Artery Calcification, Lowering The Risk Of Atherosclerosis, Heart Attack, And Stroke

Why Supplement With MK7?

The modern diet often lacks foods rich in vitamin K2, especially MK7. While leafy greens provide ample vitamin K1, the specific forms of vitamin K2, like MK7, are harder to come by. Fermented foods like natto are excellent sources but aren't staples in many Western diets. As a result, many people turn to MK7 supplements. The convenience of MK7's long half-life means that supplementation doesn't need to be as frequent, making it a stress-free option for those looking to protect their bones and heart over the long term.

MK7 Supplements: Forms, Formats & Potencies

MK7 supplements come in many delivery formats, including capsules, softgels, and chewable tablets. Capsules and softgels are convenient and offer precise dosing, while chewable tablets provide an easy-to-take option for those who have difficulty swallowing pills. Liquid forms of MK7 are also available and offer flexibility in adjusting dosages. Some supplements combine MK7 with other essential nutrients, such as vitamin D, to multiply bone and cardiovascular health benefits.

When it comes to potency, MK7 supplements typically range from 100 mcg to 200 mcg per dose. The typical recommended daily dosage for general health maintenance is around 100 mcg, though higher doses may be suggested for those looking to specifically address bone density issues or cardiovascular concerns. 

Final Thoughts On MK7

 If you're shopping for a quality MK7 supplement, it's essential to look for products that use a naturally derived form of MK7, often sourced from fermented foods such as natto, as these tend to be more bioavailable. Also, you'll want to ensure the supplement contains pure, stable MK7 without unnecessary fillers or additives. You should also choose a product that is third-party tested for purity and potency, ensuring that it meets safety standards. For better absorption, opt for supplements that are fat-based or come in soft gel form. Some of the most reputable brands on the market include Aor, Canprev, Naka, Natural Factors, Naturopathic Labs, Prairie Naturals, and Preferred Nutrition.