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# 27877

Solaray Vitamin K2 (150 mcg): Triple-Strength Bone & Arterial Support

Most people take calcium and vitamin D for stronger bones, but without Vitamin K2 (150 mcg), calcium cannot do its job properly. Think of calcium as bricks, Vitamin D as the truck that brings the bricks into your bloodstream, and Vitamin K2 as the bricklayer who ensures those bricks end up in your bones—and not clogging up your blood vessels.

Solaray Vitamin K2 150 mcg delivers a triple-strength dose of bioavailable Menaquinone-7 (MK-7) extracted naturally from fermented defatted chickpeas. It is 100% soy-free, gentle on digestion, and formulated in fast-dissolving vegetarian capsules (VegCaps) to deliver lasting cellular support throughout your entire body.

Product Snapshot:
  • Potency: 150 mcg of pure Menaquinone-7 (125% Daily Value) per single capsule.
  • Source: Clean, allergen-free fermented chickpea extract (completely soy-free & non-GMO).
  • Delivery: 30 vegetarian capsules (30-day supply).
  • Purity: Laboratory-verified for potency, heavy metals, and microbiological safety.

The "Calcium Paradox": How Vitamin K2 Protects Your Heart & Bones

In nutritional medicine, the "Calcium Paradox" describes a dangerous biological mistake: what happens when calcium leaves the bones weak (leading to osteoporosis) while building up inside the arteries (causing arterial stiffness and plaque).

Your body relies on two key proteins to move calcium correctly. Both proteins are born "asleep" and require Vitamin K2 (as MK-7) to activate them:

  1. Osteocalcin (The Bone Magnet): Made by your bone-building cells, this protein remains inactive until Vitamin K2 turns it on. Once activated, osteocalcin binds tightly to circulating calcium, pulling it directly into the bone matrix to maintain mineral density and skeletal resilience.
  2. Matrix Gla Protein / MGP (The Arterial Shield): MGP is the only known natural defense mechanism your blood vessels have against hardening. Active Vitamin K2 switches MGP on, allowing it to sweep excess calcium out of arterial walls and soft tissues, keeping blood pathways supple and elastic.

Without adequate Vitamin K2, calcium is left floating unsupervised in your bloodstream—raising the risk of calcification where you least want it.

Why Fermented Chickpea MK-7 Outperforms Other Forms

Not all Vitamin K is identical. While grocery items like spinach contain Vitamin K1 (Phylloquinone), K1 is primarily used by the liver for normal blood clotting and leaves your system in just 2 to 3 hours. Synthetic MK-4 also clears out in hours, requiring high doses taken multiple times daily.

Feature Solaray Chickpea MK-7 (150 mcg) Synthetic MK-4 / Standard K1
Blood Half-Life Up to 72 Hours (Circulates 3 days) 1.5 to 3 Hours (Clears rapidly)
Dosing Convenience ✓ Just 1 capsule once a day 3 to 6 large doses throughout the day
Allergen Safety ✓ 100% Soy-Free (from Chickpea) Often fermented with Soy (Natto allergen)
Tissue Reach Reaches bones, arteries, and brain Concentrates mostly in liver only

Because MK-7 stays active in your bloodstream for nearly three full days, a single 150 mcg dose creates a steady, 24-hour protective shield for your cardiovascular system and bones.

Scientifically Validated Health Benefits

Unlike trendy wellness fads, the benefits of Vitamin K2 (Menaquinone-7) are backed by multi-year, randomized, double-blind human clinical trials:

  • Prevents Age-Related Bone Mineral Loss: A 3-year randomized clinical trial published in Osteoporosis International followed 244 healthy postmenopausal women and proved that low-dose daily MK-7 significantly slowed the age-related decline in bone mineral density (BMD) and bone strength at both the lumbar spine and femoral neck.
  • Improves Arterial Elasticity & Reduces Stiffness: In another landmark 3-year study published in Thrombosis and Haemostasis, daily MK-7 supplementation significantly decreased arterial stiffness in women, visibly improving vascular elasticity as measured by pulse wave velocity.
  • Reduces Coronary Heart Risks: The famous population-based Rotterdam Study (4,807 subjects followed over 7–10 years) confirmed that individuals with the highest intake of dietary menaquinone (K2) had a 57% lower rate of coronary heart disease mortality and substantially lower aortic calcification.
  • The Ideal Partner for Vitamin D3: When paired with Vitamin D3, Vitamin K2 prevents the hypercalcemia-like tissue stress that can occur when high amounts of calcium enter the body without proper biochemical navigation.

Peer-Reviewed Scientific Citations (Double-Checked PMIDs):

  • Knapen MH, et al. Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporos Int. 2013;24(9):2499-507. PMID: 23525894.
  • Knapen MH, et al. Menaquinone-7 supplementation improves arterial stiffness in healthy postmenopausal women. A double-blind randomised clinical trial. Thromb Haemost. 2015;113(5):1135-44. PMID: 25694037.
  • Geleijnse JM, et al. Dietary intake of menaquinone is associated with a reduced risk of coronary heart disease: the Rotterdam Study. J Nutr. 2004;134(11):3100-5. PMID: 15514282.
  • Schurgers LJ, et al. Vitamin K-containing dietary supplements: comparison of synthetic vitamin K1 and natto-derived menaquinone-7. Blood. 2007;109(8):3279-83. PMID: 17158229.
  • Gast GC, et al. A high menaquinone intake reduces the incidence of coronary heart disease. Nutr Metab Cardiovasc Dis. 2009;19(7):504-10. PMID: 19179058.

Complete Supplement Facts & Ingredients

Supplement Facts

Serving Size: 1 VegCap

Servings Per Container: 30

Amount Per Serving % Daily Value
Vitamin K (as Menaquinone-7 from Fermented Chickpea) (K-2) 150 mcg   (125%)

* % Daily Value (DV) is based on a 2,000 calorie diet.

Full Ingredient Transparency:

Active Ingredient: Vitamin K2 (Menaquinone-7 from fermented defatted chickpea extract).

Other Ingredients: Cellulose, Vegetable Cellulose Capsule, Glycerol Monostearate, Magnesium Stearate, Fermented Defatted Chickpea Flour Extract, and Silica.

Free of: Artificial colors, artificial flavors, preservatives, gluten, milk, eggs, peanuts, tree nuts, and soy. 100% Vegan & Vegetarian friendly.

Suggested Use & Important Medical Safety Information

Suggested Directions: Use only as directed. Take 1 vegetarian capsule daily with a meal containing healthy dietary fats (such as olive oil, avocado, or eggs) or a full glass of water. Because Vitamin K2 is fat-soluble, dietary fats maximize its absorption into your intestinal lining. Store in a cool, dry place away from direct sunlight.

⚠ CRITICAL CONTRAINDICATION:

If you are taking anticoagulant medications (blood thinners such as Warfarin, Coumadin, or Jantoven), DO NOT take Vitamin K2 without explicit approval and monitoring from your prescribing cardiologist or hematologist. Vitamin K directly promotes normal blood-clotting factors, which counteracts the deliberate thinning effect of Vitamin K antagonist drugs. Keep out of reach of children.

Frequently Asked Questions (FAQ)

1. What is Vitamin K2 (150 mcg) and why do I need it?

Vitamin K2 is an essential fat-soluble vitamin that acts as your body's "calcium traffic cop." Even if you consume plenty of calcium, your body needs K2 to activate two crucial proteins: Osteocalcin (which glues calcium into your bones and teeth) and Matrix Gla Protein (which keeps calcium from building up inside your arteries and heart). A 150 mcg daily dose provides optimal, triple-strength cellular coverage.

2. What is the difference between Vitamin K1 and Vitamin K2 MK-7?

Vitamin K1 comes from green leafy vegetables and is mainly routed to your liver to assist with normal blood clotting. It clears out of your body within a few hours. Vitamin K2 (especially the MK-7 form) stays in your blood circulation for up to 72 hours, allowing it to reach distant tissues like your bones, arteries, and brain.

3. Is Solaray Vitamin K2 150 mcg soy-free?

Yes! While many commercial K2 supplements are made from fermented soy (Japanese Natto), Solaray extracts its Menaquinone-7 from fermented chickpeas. It is 100% soy-free, non-GMO, and vegetarian.

4. Should I take Vitamin K2 together with Vitamin D3?

Yes, they make an ideal team. Vitamin D3 helps your intestines absorb calcium into your blood, while Vitamin K2 ensures that calcium gets deposited into your bones instead of your arteries. Taking D3 without K2 can lead to unguided calcium circulating in your bloodstream.

5. What is the best time of day to take this supplement?

Because Vitamin K2 is fat-soluble, it is best absorbed when taken with a meal that contains healthy dietary fats, such as breakfast or dinner. Taking it with food also prevents minor stomach upset.

6. Can I take Vitamin K2 if I am on blood thinners?

If you take prescription blood thinners like Warfarin (Coumadin), do not start Vitamin K2 without consulting your doctor. Vitamin K directly counteracts Warfarin's mechanism, which could alter your INR blood test numbers. However, Vitamin K2 typically does not interact with non-vitamin K blood thinners (like aspirin or newer DOACs), but always verify with your healthcare provider first.

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