Life Extension Mega Vitamin K2 High Potency, 45 mg, 30 Capsules

What Is Mega Vitamin K2?

Mega Vitamin K2 is a high-strength formulation that provides 45 mg (45,000 mcg) of vitamin K2 in the form of menaquinone-4 (MK-4). MK-4 is a short-chain menaquinone naturally occurring in animal-based foods such as liver and egg yolks, but achieving a therapeutic dose through diet alone is difficult. This supplement delivers a concentrated amount that has been investigated in clinical research for its role in bone health.

Vitamin K2 activates proteins that regulate calcium deposition, helping to direct calcium towards bones and away from soft tissues. This makes it important for maintaining both bone density and arterial health.

How Much Vitamin K2 Should You Take?

The dosage in Mega Vitamin K2 is based on clinical evidence. 45 mg (45,000 mcg) of MK-4 per day is an amount that has been shown to support bone health effectively. This is considerably higher than typical dietary intakes, which average around 10–100 mcg per day. For context, the UK reference nutrient intake (RNI) for vitamin K is approximately 1 µg per kg of body weight for total vitamin K (including K1). Higher doses of MK-4 are well tolerated and have been used in studies for bone support.

Life Extension recommends taking one capsule daily with food for best absorption, as vitamin K is fat-soluble.

Key Benefits of Vitamin K2 for Bone Health

• Supports osteoblast activity: Vitamin K2 encourages osteoblasts — the cells responsible for building bone — to function optimally, promoting healthy bone structure and growth.
• Helps maintain bone mineral density: Over time, bone remodelling slows, which can reduce density. Vitamin K2 supports processes that help keep bones dense and strong.
• Contributes to normal calcium utilisation: By activating osteocalcin, vitamin K2 helps bind calcium to the bone matrix, ensuring calcium goes where it is needed most.
• Supports skeletal integrity: Adequate vitamin K2 levels are associated with a lower risk of fractures and better overall bone quality.

Who May Benefit from Vitamin K2 Supplementation?

Individuals with limited dietary intake of vitamin K2, older adults experiencing age-related bone loss, and those seeking to maintain strong bones as they age may find this supplement particularly useful. People with conditions affecting bone density, such as osteopenia or osteoporosis, may also benefit — whilst always consult your health care professional before starting any new regimen.

Vegetarians and vegans may especially appreciate this supplement, as MK-4 from animal sources is harder to obtain from plant-based diets.

What Sets Life Extension Mega Vitamin K2 Apart?

• Clinically studied dose: This formula provides 45 mg of MK-4 — the amount used in scientific studies for bone density support.
• Premium ingredients: Life Extension sources high-quality raw materials. Most products are non-GM and gluten-free, and this one is no exception.
• Manufactured in the USA: Produced in facilities that adhere to strict quality control standards. A Certificate of Analyse is available for every batch.
• Supported by science: The brand's philosophy relies on peer-reviewed research to determine ingredient types and amounts.

Supporting Bone Health with Vitamin K2

Vitamin K2 is an essential nutrient that plays a critical role in bone metabolism. Life Extension Mega Vitamin K2 delivers 45 mg of menaquinone-4 (MK-4) per capsule — a clinically researched dose designed to contribute to the maintenance of normal bones. As we age, our bones naturally undergo changes that can compromise strength. This premium supplement provides the targeted support your skeletal system needs to stay resilient.

Safety and Considerations

Vitamin K2 is generally safe and well tolerated. However, if you are taking anticoagulant medications (e.g., warfarin), consult your health care professional before using this supplement, as vitamin K can interact with these drugs. Pregnant or breastfeeding women should also seek medical advice before uses.

Adhere to the recommended dosage — 45 mg daily — and do not exceed unless directed by a health care professional.

Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle. These statements have not been evaluated by the Medicines and Health care products Regulatory Agency (MHRA). This product is not intended to diagnose, treat, , or prevent any disease.