Vitamin K2 MK-4 – 100 Vegetarian Capsules – Rapid Bone & Brain Support* w/ 250mg Alfalfa
LifeSource Vitamins K2 MK-4 delivers menaquinone-4, the most tissue-specific and fast-acting form of vitamin K2 for rapid bone health support, cardiovascular protection, and unique brain benefits. Unlike other K2 forms, MK-4 can be synthesized by your body from vitamin K1 and is the primary form found in animal tissues, making it particularly effective for immediate cellular functions and specialized tissue support throughout your body. Produced in FDA-registered, GMP-certified facilities and 3rd-party lab tested for purity, potency, and label accuracy. Consult a healthcare professional if taking blood-thinning medications.*
Research-Driven & Verified Product.
Explore the clinical research, ingredient science, and global evidence supporting this product below.
Research Promise: At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is supported by human clinical studies indexed in the National Institutes of Health (NIH) via PubMed, with full texts available in the National Library of Medicine (NLM) PubMed Central (PMC) when available. In addition, we reference reviews from leading health organizations and insights from top global universities to ensure our guidance aligns with credible science.*
Clinically Studied Benefits
✓ Supports Rapid Bone Health & Density — MK-4 rapidly activates osteocalcin for immediate bone matrix formation and calcium binding, providing faster bone support than other K2 forms.
NIH/PubMed — Iwamoto, 2006
✓ Supports Brain Health & Cognitive Function — MK-4 is the predominant form of vitamin K2 in brain tissue, supporting sphingolipid synthesis and neuronal health.
NIH/PubMed — Ferland, 2012
✓ Supports Cardiovascular Health — MK-4 activates matrix Gla protein (MGP) to prevent arterial calcification and maintain vascular flexibility.
NIH/PubMed — Geleijnse, 2004
✓ Supports Steroid Hormone Regulation — MK-4 acts as a transcriptional regulator for steroid hormones including testosterone and plays roles in reproductive health.
NIH/PubMed — Azuma, 2011
✓ Supports Cellular Energy Production — MK-4 supports mitochondrial function and cellular energy metabolism through electron transport chain activity.
NIH/PubMed — Vos, 2012
✓ Supports Calcium Metabolism — MK-4 ensures proper calcium utilization by activating proteins that direct calcium to bones while preventing soft tissue deposits.
NIH/PubMed — Iwamoto, 2006
✓ Supports Insulin Sensitivity — MK-4 improves glucose metabolism and insulin sensitivity through osteocalcin activation and metabolic regulation.
NIH/PubMed — Azuma, 2011
✓ Supports Anti-Inflammatory Processes — MK-4 demonstrates anti-inflammatory properties and helps regulate inflammatory markers throughout the body.
NIH/PubMed — Ferland, 2012
✓ Supports Tissue-Specific Functions — Unlike other K2 forms, MK-4 concentrates in specific tissues (brain, reproductive organs, bones) for targeted therapeutic benefits.
NIH/PubMed — Maresz, 2020
Additional / Promising Evidence
✓ May Help Support Cholesterol Management — MK-4 may help maintain healthy cholesterol levels through metabolic regulation.
NIH/PubMed — Maresz, 2020
✓ May Help Maintain Dental Health — MK-4 supports tooth mineralization and may help prevent dental caries.
NIH/PubMed — Theuwissen, 2012
✓ May Help Support Skin Health — MK-4 may contribute to skin cell regeneration and wound healing processes.
NIH/PubMed — Ferland, 2012
✓ May Help Balance Blood Sugar — MK-4 may support healthy glucose metabolism through osteocalcin pathways.
NIH/PubMed — Azuma, 2011
✓ May Help Support Liver Function — MK-4 may contribute to liver health and detoxification processes.
NIH/PubMed — Vos, 2012
✓ May Help Maintain Muscle Function — MK-4 may support muscle protein synthesis and neuromuscular coordination.
NIH/PubMed — Vos, 2012
✓ May Help Support Reproductive Health — MK-4 concentrates in reproductive tissues and may support fertility in both men and women.
NIH/PubMed — Azuma, 2011
✓ May Help Reduce Oxidative Stress — MK-4 may provide antioxidant benefits and protect against cellular damage.
NIH/PubMed — Ferland, 2012
✓ May Help Support Memory & Learning — Brain-specific MK-4 may contribute to cognitive performance and memory formation.
NIH/PubMed — Alisi, 2014
✓ May Help Maintain Healthy Aging — MK-4's tissue-specific actions may support multiple aspects of healthy aging processes.
NIH/PubMed — Maresz, 2020
We monitor research from leading institutions —
Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, Tufts, University of Florida, Oregon State University – Linus Pauling Institute, Columbia, Cornell, Ohio State — to align with credible science.*
Key Ingredients
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Vitamin K2 (as MK-4/Menaquinone-4) w/ Alfalfa — Rapidly activates osteocalcin and MGP for bone mineralization, vascular protection, and tissue-specific benefits including brain support. (NIH/LPI — Vitamin K)
Brief Benefit Bullets
- Supports rapid bone health & density*
- Supports brain health & cognitive function*
- Supports cardiovascular health*
- Supports steroid hormone regulation*
- May help support tissue-specific functions* — Concentrates where needed most*
- May help maintain cellular energy production* — Mitochondrial support*
- May help balance insulin sensitivity* — Glucose metabolism support*
- May help reduce inflammation* — Anti-inflammatory properties*
- May help support reproductive health* — Fertility & hormone balance*
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3rd-party lab tested for purity, potency & accuracy
Suggested Use
Adults: Take 1-2 capsule daily with meals containing healthy fats for optimal absorption. For therapeutic benefits, divide doses throughout the day due to MK-4's shorter half-life. May be taken with calcium and vitamin D supplements for synergistic bone health benefits. Do not exceed recommended dosage unless directed by a healthcare professional. Consult a healthcare professional if taking blood-thinning medications.*
Product Specifications
• Serving Size — 1 Vegetarian Capsule
• Servings Per Container — 100
• Vitamin K2 (as MK-4/Menaquinone-4) w/ Alfalfa
• Form — Vegetarian Capsules
• Free From — Non-GMO, gluten-free, no artificial colors*
• Quality — Third-party tested for identity, potency & purity
LifeSource Vitamins — Proudly American — Since 1992
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Vitamin K2 MK-4 – 100 Vegetarian Capsules – rapid support for bone density, brain health & cardiovascular protection with alfalfa. Clinically Studied Ingredients — NIH/PubMed!*
