Mega Vitamin K2, 30 Capsules
Mega Vitamin K2 from Life Extension delivers high-dose menaquinone-7 (MK-7), the long-chain form of vitamin K2 known for its extended half-life and superior bioavailability compared to shorter-chain forms.
May be a fit for
- Adults seeking MK-7 vitamin K2 support for healthy bone mineral density
- Those maintaining cardiovascular wellness through vitamin K2-dependent protein activation
- Individuals over 40 supporting calcium utilization with high-dose K2
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Mega Vitamin K2 from Life Extension delivers high-dose menaquinone-7 (MK-7), the long-chain form of vitamin K2 known for its extended half-life and superior bioavailability compared to shorter-chain forms. It supports calcium utilization, bone matrix formation, and cardiovascular health by helping direct calcium to bones rather than soft tissues. Well-suited for adults focused on long-term skeletal and arterial health.
Why It's Worth Considering: MK-7 derived from natto offers a dosing advantage, its longer half-life allows more consistent tissue saturation with once-daily intake, making this a practical option for those seeking meaningful K2 levels over time.
Life Extension · 30 CapsulesMake it part of your routine.
Take one (1) capsule daily with food, or as recommended by a healthcare practitioner.
Read the complete labelProduct details
Supplement facts & complete label
Serving Size:
1 Capsule
Amount Per Serving:
Vitamin K2 ... 45,000mcg
[as menaquinone-4 (45 mg)]
Other Ingredients:
microcrystalline cellulose, gelatin (capsule), vegetable stearate, silica.
Warning: If you are taking a vitamin K antagonist (e.g. warfarin), consult your healthcare practitioner before taking this product. When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.
Label directions
Take one (1) capsule daily with food, or as recommended by a healthcare practitioner.
Source: authorized supplier catalog · September 06, 2026. Formulas and labels can change. Check the packaging you receive.
Who it may suit
May be a fit for
- Adults seeking MK-7 vitamin K2 support for healthy bone mineral density
- Those maintaining cardiovascular wellness through vitamin K2-dependent protein activation
- Individuals over 40 supporting calcium utilization with high-dose K2
- Postmenopausal women using vitamin K2 to support skeletal structural integrity
Considerations
- Taking warfarin/Coumadin (K2 counteracts warfarin — consult physician)
- Other vitamin K-dependent anticoagulants
- Note: K2 does NOT interact with non-vitamin-K blood thinners like Eliquis or Xarelto
Compatibility & interactions
Works Well With
Ask Gabriel for personalized stacking recommendations.
Take Separately From
No significant interactions identified. Always consult your healthcare provider.
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A few useful answers.
Research & further reading
More category questions
What is the difference between K1 and K2?
Vitamin K1 (phylloquinone) is for blood clotting — abundant in leafy greens. Vitamin K2 (menaquinone) directs calcium metabolism — puts calcium in bones and keeps it out of arteries. Most people get enough K1 from diet but are deficient in K2, which is found mainly in fermented foods (natto, certain cheeses) and animal liver.
What is MK-7 and why is it the preferred form?
MK-7 is the most bioavailable and longest-acting form of K2, with a half-life of ~3 days (vs ~1 hour for MK-4). This means a single daily dose maintains therapeutic blood levels 24/7. MK-7 is derived from natto (fermented soybeans) and has the strongest clinical evidence for bone density and arterial health.
How much vitamin K2 should I take?
For general health with D3: 100-200mcg MK-7 daily. For osteoporosis: 180-360mcg. For cardiovascular calcification prevention: 180-200mcg. The dose should scale with your D3 intake — higher D3 doses require more K2 to handle the increased calcium absorption.
Can I take K2 if I'm on blood thinners?
If you're on warfarin/Coumadin: NO — K2 counteracts warfarin and will destabilize your INR. Consult your cardiologist. If you're on newer anticoagulants (Eliquis/apixaban, Xarelto/rivaroxaban, Pradaxa/dabigatran): these are NOT vitamin K-dependent, so K2 is safe. Always confirm with your prescribing physician.
Supplement information is provided for education and is not a substitute for personalized medical advice. Supplements are not intended to diagnose, treat, cure or prevent disease. Read the current product label before use.