Life Extension Super K – Vitamin K Supplement with K1 and K2, 90 Soft Capsules

Why Choose Life Extension Super K?

Looking to maintain normal blood clotting and strong bones? Life Extension Super K offers a comprehensive blend of vitamin K in a convenient once-daily soft capsule. This formula combines vitamin K1 (2000 µg) and two forms of vitamin K2 (1180 µg) – MK-4 and MK-7 – to support your body's natural calcium balance. It is a science-backed choice for those who want more than the basic single-form vitamin K supplements.

What Makes Life Extension Super K Unique?

Life Extension Super K delivers a potent dose of 2000 µg vitamin K1 (phylloquinone) and 1180 µg vitamin K2 in two bio-available forms: menaquinone-4 (MK-4) and menaquinone-7 (MK-7). This once-daily formula is designed to support normal blood clotting and bone health while helping maintain healthy calcium balance in the body. By combining both K1 and multiple K2 forms, Super K offers a more complete approach to vitamin K supplementation than many single-form products on the market.

Vitamin K is a fat-soluble vitamin that plays essential roles in blood clotting and bone metabolism. However, many people do not obtain adequate amounts from diet alone. Super K helps fill that gap with a potent, science-backed blend.

The Role of Vitamin K in Heart and Bone Health

Vitamin K is best known for its role in activating proteins that regulate blood clotting. But its benefits extend beyond that. Two key proteins—osteocalcin and matrix Gla protein (MGP)—depend on vitamin K for activation. Osteocalcin helps bind calcium to the bone matrix, while MGP inhibits calcium deposition in soft tissues like arteries.

By supporting these processes, vitamin K contributes to normal blood clotting and normal bone health. Higher intake of vitamin K2 has been associated with better arterial elasticity and a reduced risk of vascular calcification, whilst these are not authorised health claims. Super K's dual delivery of K1 and K2 ensures that both pathways are supported.

Vitamin K1 vs. K2: Why Both Matter

Vitamin K1 (phylloquinone) is primarily found in green leafy vegetables and is mainly used by the liver for blood clotting factors. Vitamin K2 (menaquinones) is produced by bacteria and found in fermented foods; it has a longer half-life and is more widely distributed to extrahepatic tissues like bone and blood vessels.

Super K includes both types for a reason. K1 supports immediate clotting needs, while K2 (especially MK-7) provides sustained activity to activate MGP and osteocalcin throughout the body. This combination ensures comprehensive coverage of vitamin K's diverse functions.

How Much Vitamin K Do You Need?

The Reference Nutrient Intake (RNI) for vitamin K in the UK is 1 µg per kg of body weight, which for most adults is around 70–90 µg per day. Super K provides significantly more—2000 µg of K1 and 1180 µg of K2—to support optimal activation of vitamin K-dependent proteins. This higher dosage is based on research suggesting that many individuals require more than the RNI for extra-skeletal benefits.

Take one soft capsule daily with a meal containing fat for best absorption. As a fat-soluble vitamin, K is better absorbed when consumed with dietary fat.

Potential Side Effects and Interactions

Vitamin K is generally well tolerated, with no known toxicity at high intakes. However, individuals taking anticoagulant medications like warfarin should consult a health care provider before supplementing, as vitamin K can interfere with blood thinning effects. Those with a history of blood clotting disorders should also seek medical advice.

Mild digestive upset may occur in some individuals. If you experience any adverse effects, discontinue uses and consult a professional. Always read the label and follow directions for uses.

Frequently Asked Questions

Can I take Super K with other supplements? Yes, Super K pairs well with vitamin D and calcium for bone health. However, consult your health care provider if you are on any medications.

Is this supplement suitable for vegans? The soft capsules likely contain gelatine; check the label for specific dietary information.

How long does one bottle last? With 90 soft capsules and a once-daily serving, it lasts three months.

This product is a food supplement. Do not exceed the recommended dose. Keep out of reach of children. Food supplements should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. This product is not intended to diagnose, treat, or prevent any disease.