Health Benefits of Vitamin K2 MK-7
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Normal Bone Maintenance: Vitamin K2 activates osteocalcin, a protein that binds calcium to the bone matrix. This helps maintain strong, dense bones and supports normal bone function as we age.
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Normal Blood Clotting: Vitamin K is essential for the production of clotting factors. MK-7 contributes to normal blood coagulation.
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Calcium Regulation: K2 ensures that calcium absorbed from food is directed to bones and teeth rather than soft tissues, optimising the benefits of your calcium intake.
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Dental Health: Osteocalcin also supports dentin formation, contributing to strong teeth.
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Circulatory Support: By activating matrix Gla protein (MGP), K2 helps maintain healthy arteries by inhibiting calcium deposition in arterial walls, promoting vascular elasticity.
These beneficial effects are recognized by the European Food Safety Authority. Vitamin K2 contributes to the maintenance of normal bones and normal blood clotting. This product is not intended to diagnose, treat, or prevent any disease.
What Is Vitamin K2 MK-7?
Vitamin K2, specifically the MK-7 (menaquinone-7) form, is a fat-soluble vitamin crucial for several bodily functions. Unlike vitamin K1, which is primarily involved in blood clotting, vitamin K2 plays a vital role in directing calcium to bones and teeth whilst helping prevent calcium deposition in arteries and soft tissues. This makes K2 a key nutrient for maintaining strong bones and a healthy cardiovascular system.
The MK-7 form is derived from natural fermentation (often from natto or chickpea) and is known for its longer half-life compared to MK-4, allowing steady blood levels with once-daily dosage. Each capsule provides 100 mcg of vegan-friendly vitamin K2 MK-7, designed to support your daily nutritional needs.
Vitamin K2 vs Vitamin K1: What’s the Difference?
Vitamin K exists in two primary forms: K1 (phylloquinone) and K2 (menaquinone). While both are important, they have distinct roles and sources. Vitamin K1 is found in green leafy vegetables like spinach, kale, and broccoli, and is mainly used by the liver to activate clotting factors. Vitamin K2, on the other hand, is predominantly produced by bacteria and found in fermented foods such as natto, cheese, and sauerkraut, as well as in animal products like egg yolks and butter.
The key functional difference lies in their distribution within the body. K1 is quickly processed by the liver, whereas K2 (especially MK-7) circulates longer and reaches extrahepatic tissues, including bones and blood vessels. Therefore, for bone and arterial health, vitamin K2 is often considered more effective. Many experts recommend that individuals looking to support bone density and maintain flexible arteries choose a K2 MK-7 supplement.
Recommended Dosage of Vitamin K2
The adequate intake (AI) for vitamin K varies by age and gender, but for adults, it typically ranges from 90–120 mcg per day. However, most dietary guidelines are based on K1. Since K2 is more potent and longer-acting, a common supplementary dose is 100 mcg of MK-7 daily, which is exactly what each capsule of this product provides.
For individuals with specific health goals, such as supporting bone density or cardiovascular wellness, 100–200 mcg of MK-7 per day is often recommended. Always consult with a health care professional before starting a new supplement, especially if you are taking blood-thinning medications (e.g., warfarin) or have a medical condition affecting vitamin K metabolism.
Take one capsule daily with a meal containing fat for optimal absorption. Store in a cool, dry place.
Potential Side Effects and Interactions
Vitamin K2 is generally well tolerated and considered safe at recommended doses. Few side effects have been reported. However, because vitamin K promotes blood clotting, individuals on anticoagulant therapy (especially warfarin) must avoid vitamin K supplements unless directed by their GP, as it can interfere with medication effectiveness.
Other potential interactions include antibiotics (which reduce vitamin K production in the gut) and certain medications for liver disease or fat malabsorption. If you have a history of kidney stones or are pregnant/nursing, consult your health care provider before uses.
As with any supplement, discontinue uses if you experience any adverse effects and seek medical attention if necessary.
How to Choose a Quality Vitamin K2 Supplement
When selecting a vitamin K2 supplement, consider the following factors:
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Form of K2: MK-7 is preferred for its long half-life and consistent blood levels. Look for “menaquinone-7” on the label.
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Dosage: 100 mcg is a standard daily dose; higher amounts (up to 200 mcg) may be suitable for targeted support.
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Source and Purity: Choose a supplement that is third-party tested for contaminants and purity. The Vitamin Shoppe brand products are rigorously tested for potency and purity.
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Vegan Certification: For plant-based diets, ensure the K2 is derived from non-animal sources (e.g., chickpea fermentation). This product is vegan.
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Additional Ingredients: Some formulae include vitamin D3 or calcium to work synergistically. This product is standalone but can be easily combined.
The Vitamin Shoppe Vitamin K2 MK-7 meets these criteria: it is vegan, non-GMO, gluten-free, and third-party tested for quality.
Frequently Asked Questions
What is the difference between vitamin K2 and vitamin K1?
Vitamin K1 (phylloquinone) is mainly involved in blood clotting and is found in leafy greens. Vitamin K2 (menaquinone) supports bone and cardiovascular health by directing calcium to bones and away from arteries. K2, especially MK-7, stays in the body longer.
Can I take vitamin K2 with vitamin D and calcium?
Yes. In fact, these three nutrients work together: vitamin D enhances calcium absorption, vitamin K2 ensures calcium is deposited in bones, and calcium provides the building material. Many experts recommend taking them together for optimal bone health.
Are there any foods that contain vitamin K2?
Yes. Natto (fermented soybeans) is the richest source. Other sources include hard cheeses, egg yolks, butter, chicken liver, and sauerkraut. However, getting enough K2 through diet alone can be challenging, making supplementation a convenient option.
Is vitamin K2 safe for everyone?
Vitamin K2 is safe for most people at recommended doses. However, if you are taking blood thinners (especially warfarin), have a history of blood clots, or are undergoing surgery, consult your GP before uses.
How long does it take to see benefits?
Because vitamin K2 works by supporting long-term bone and cardiovascular health, consistent daily uses over months to years is typically needed for noticeable effects. Some studies show improvements in bone markers within several weeks of supplementation.
These statements describe the role of vitamin K2 as established by the European Food Safety Authority. This product is not intended to diagnose, treat, or prevent any disease.