Jarrow Formulae MK-7 90 mcg – Vitamin K2 (MK-7) Food Supplement for Bone and Cardiovascular Health – 90 Softgels

Health Benefits of Vitamin K2 MK-7

Bone Health Support

Vitamin K contributes to the maintenance of normal bones. By activating osteocalcin, vitamin K2 helps direct calcium into the bone matrix. Jarrow Formulae MK-7 supplies the bioactive MK-7 form, which is particularly effective for supporting bone mineral density.

Heart and Blood Vessel Health

Matrix Gla protein (MGP) plays a role in regulating calcium deposition. Vitamin K2 activates MGP, which may help maintain arterial flexibility. Many individuals include MK-7 in a heart-healthy regimen alongside magnesium and vitamin D.

Synergy with Vitamin D

Vitamin D enhances calcium absorption, whilst vitamin K2 guides calcium to the bones. Together, they work synergistically to support skeletal strength and vascular integrity. Jarrow Formulae MK-7 can be taken alongside vitamin D supplements for comprehensive support.

What is Vitamin K2 (MK-7)?

Vitamin K is a fat-soluble vitamin essential for blood clotting and bone metabolism. While vitamin K1 (phylloquinone) is mainly involved in coagulation, vitamin K2—particularly the MK-7 (menaquinone-7) form—offers distinct benefits for bone and cardiovascular health. Jarrow Formulae MK-7 delivers 90 mcg of naturally derived vitamin K2 as MK-7, sourced from natto (fermented soya). This bioactive form boasts a longer half-life in the body compared to other K2 variants, ensuring steady plasma levels with once-daily dosage.

Vitamin K2 vs. Vitamin K1

Understanding the difference between K1 and K2 is crucial when selecting a supplement. Vitamin K1 is abundant in green leafy vegetables and activates clotting factors in the liver. Vitamin K2 is produced by bacteria and found in fermented foods like natto and cheese. K2 (especially MK-7) is more effective at activating extra-hepatic proteins such as osteocalcin and matrix Gla protein. This makes K2 the preferred form for supporting bone density and cardiovascular function beyond basic coagulation.

Recommended Dosage

Adults are advised to take one soft gel capsule daily, providing 90 mcg of vitamin K2 as MK-7. This dose aligns with general recommendations for bone and cardiovascular support. Always consult a health care professional for individualised advice, particularly if you are taking anticoagulant medication such as warfarin.

Potential Side Effects & Interactions

Vitamin K2 is generally well tolerated. However, individuals on anticoagulant therapy (e.g., warfarin) should avoid vitamin K supplements unless directed by a physician, as vitamin K can interfere with these medications. Other interactions may include antibiotics and certain cholesterol-lowering drugs. Pregnant or breastfeeding women should consult a health care provider before uses. Allergy to soya may be a concern; Jarrow Formulae MK-7 is derived from natto (soya) and may contain trace residues, whilst the manufacturer states it is processed to remove soya protein.

How to Choose a Vitamin K2 Supplement

When selecting a vitamin K2 product, consider the form: MK-7 offers superior bioavailability and sustained activity compared to MK-4. Look for naturally sourced, non-GM, and allergen-friendly formulations. Jarrow Formulae MK-7 is Gluten-free, vegan, and free of common allergens. The soft gel capsule includes a small amount of olive oil to enhance absorption, as vitamin K is fat-soluble.

Frequently Asked Questions

Can I take vitamin K2 with other supplements?

Yes, vitamin K2 pairs well with vitamin D3, magnesium, and calcium. Many formulations combine these nutrients for bone health. However, avoid taking it with high-dose vitamin E, which can antagonise vitamin K.

What is the difference between MK-4 and MK-7?

MK-4 is a synthetic form with a short half-life (hours), requiring multiple daily doses. MK-7 is naturally occurring, has a half-life of about three days, and maintains steady blood levels with once-daily dosage.

Is this product safe for long-term uses?

Yes, at the recommended dosage of 90 mcg daily, MK-7 is considered safe for long-term uses. It is a food-based nutrient found in traditional diets.

This product is a food supplement. It is not intended to diagnose, treat, or prevent any disease. If you are pregnant, breastfeeding, taking medication or have a medical condition, consult your doctor before uses.