Super K brings a potent mix of vitamin K1 and K2 to support healthy bones and arteries, backed by Life Extension's legacy of science-led and quality-driven supplements. Quick-acting MK-4 and long-lasting MK-7 team up with K1 to keep calcium uptake balanced throughout the day. Life Extension's GMP manufacturing processes and dedication to quality help safety and consistency you can trust.

Available Sizes & Variants:

90 Softgels – Daily support for bone and cardiovascular health.

Benefits & Features:

• Supports healthy bones by aiding calcium use.
• Promotes flexible arteries for steady blood flow all day long.
• Star ingredients blend fast MK-4 with sustained MK-7 and K1 to transfer calcium into bones and teeth, while limiting calcium buildup day by day.
• Manufactured by Life Extension, a brand known for evidence based formulations, the product adheres to GMP practices and third party testing so you can trust potency and purity.
• Premium k2 vitamin supports calcium metabolism and arterial health within a non GMO olive oil based softgel.

Life Extension's Super K rests on years of science-led development. Dr. Cockayne of Erasmus University Medical Center in Rotterdam led a Rotterdam study showing that adequate K2 intake links to a notably lower risk of heart disease, including a 57% reduction in death from heart disease. The formula blends fast-acting MK-4 with long-lasting MK-7 in an olive oil base, plus vitamin K1, and is non-GMO. It’s a neatly crafted daily softgel designed to slot into a balanced wellness routine. This isn't a vitamin d supplement, but it complements your overall bone and heart health goals when paired with a balanced plan.

Vitamin C (as Ascorbyl palmitate)
Vitamin K activity
From:
Vitamin K1
Vitamin K2 (as menaquinone-4)
Vitamin K2 (as trans menaquinone-7)

• GTIN: 737870233435
• Manufacturer: Life Extension
• Categories: Vitamin K Supplements & Tablets
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take one softgel daily with food, or follow your healthcare practitioner's advice. 3 capsules\, 3 times a day\, one hour before each meal.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Vitamin K2 (MK-4 and MK-7)

Vitamin K2 is a fat-soluble vitamin that activates proteins involved in calcium handling for healthy bones and arteries. This formulation includes fast-acting MK-4 and sustained MK-7 forms to support daily calcium use and vascular function.

This form is derived from natural sources and combined with additional compounds to support stability and bioavailability.

What Does Vitamin K2 Do?

Vitamin K2 helps maintain normal calcium metabolism and contributes to bone strength and arterial function. Scientific research suggests its role in promoting arterial flexibility and bone mineralisation, as discussed by Dr. Geleijnse of Leiden University.

The information provided reflects recognised nutrient functions and aligns with EFSA guidance on vitamin K2 roles in the body.

*This product is not intended to diagnose, treat, cure, or prevent any disease.

What makes Life Extension Super K (vitamin K2) with Advanced K2 Complex Welzo Selected

Life Extension stood out in our assessment for its long-standing reputation as a science-led, premium supplement maker with a clear commitment to research, transparency, and quality. The brand is widely recognised for evidence-based formulations and in-house research, backed by third-party certifications and a trusted industry standing.

Our team evaluated Life Extension on sourcing transparency and manufacturing excellence. The manufacturer stresses GMP-compliant facilities, raw material verification, batch-to-batch consistency, and proactive third-party testing to ensure potency and purity, all aligned with our quality expectations. For added reassurance, you can explore how we verify these standards with our quality certification process and learn about our clinical guidance from our expert team of doctors, nurses, and nutritionists.

This brand is a natural fit for Super K, pairing fast-acting MK-4 with sustained MK-7 alongside K1 to support the product’s aims of healthy calcium metabolism, arterial function, and bone strength as described in the brand’s research-backed profile.