Superior Source Vitamina K2 MK-7 (Menaquinona-7) 100 mcg - 60 Comprimidos Sublinguales

What is vitamin K2 and why is it important?

Vitamin K2, also known as menaquinone, is a form of vitamin K essential for the body. Unlike vitamin K1 (phylloquinone) which is mainly found in leafy green vegetables, K2 is naturally produced in some fermented foods and is also synthesized by intestinal bacteria. K2 plays a key role in activating proteins that regulate blood clotting and bone metabolism. In particular, the MK-7 (menaquinone-7) form stands out for its long half-life in the body, allowing stable blood levels to be maintained with a single daily dose.

This Superior Source food supplement offers 100 micrograms of vitamin K2 in the form of MK-7 in a convenient, fast-dissolving sublingual tablet. Sublingual administration facilitates direct absorption through the oral mucosa, bypassing the digestive tract and improving bioavailability. It is an ideal option for people who have difficulty swallowing pills or who are looking for quick and effective absorption, including bariatric patients.

What are the health benefits of vitamin K2?

According to the European Food Safety Authority (EFSA), vitamin K contributes to normal blood clotting and the maintenance of normal bones. These benefits are recognized for all forms of vitamin K, including K2 MK-7.

• Bone maintenance: Vitamin K activates osteocalcin, a protein that fixes calcium in the bone matrix, thus helping to maintain bone density and strength.
• Normal coagulation: It activates clotting factors in the liver, necessary for proper hemostasis.
• Cardiovascular health: K2 activates MGP (Matrix Gla-Protein), which helps prevent calcification of arteries, although this use is not an EFSA-approved health claim.

It is important to remember that vitamin K2 acts synergistically with vitamin D and calcium. While vitamin D promotes calcium absorption, K2 directs that calcium to the bones and teeth, helping to prevent unwanted deposits in soft tissues.

How much vitamin K2 should I take daily?

The recommended dose of this product is one sublingual tablet per day, providing 100 micrograms of menaquinone-7. This amount is suitable as part of a balanced diet and a healthy lifestyle. No specific reference intakes have been established for vitamin K2, but studies typically use doses between 45 and 180 micrograms daily for MK-7. Consult your healthcare professional to determine the most appropriate dose for your individual needs, especially if you are taking anticoagulant medication.

How to use: Place one tablet under the tongue and allow it to dissolve completely. No water is needed. Avoid eating or drinking for a few minutes after taking.

Differences between vitamin K1 and K2 (and MK-7 vs MK-4)

Vitamin K1 (phylloquinone) is found in green vegetables and is mainly used in the liver for coagulation. Vitamin K2 includes several subforms (menaquinones), the most common being MK-4 and MK-7. MK-4 has a short half-life and is found in animal-derived foods. MK-7, derived from natto fermentation (fermented soybeans), has a much longer half-life (around 72 hours), allowing for sustained plasma levels with a single daily dose. Therefore, MK-7 is the preferred form in supplementation for bone and vascular maintenance.

This product uses high-purity MK-7, obtained naturally from bacillus fermentation (Bacillus subtilis natto), guaranteeing a biologically active form.

How to choose the best vitamin K2 supplement

When selecting a vitamin K2 supplement, consider the following:

• Form: MK-7 is preferable due to its higher bioavailability and duration.
• Dose: 100 micrograms per day is a common and effective dose.
• Presentation: Sublingual tablets offer direct absorption, ideal for those seeking speed or who have gastrointestinal problems.
• Quality: Superior Source has been manufacturing its products in the United States since 1998, with strict quality controls in its own facilities.
• Certifications: Free of gluten, lactose and other common allergens (check the label).

This product is suitable for vegetarian diets (MK-7 is obtained by bacterial fermentation).

Possible side effects and contraindications

Vitamin K2 is generally safe and well tolerated, even at high doses. No maximum toxic intake level has been established. However, people taking anticoagulants (such as warfarin/acenocoumarol) should consult their doctor before starting supplementation, as vitamin K can interfere with the action of these medications. Its use is not recommended during pregnancy or lactation without medical supervision.

This product is a food supplement and should not be used as a substitute for a balanced diet. Do not exceed the recommended daily dose. Keep out of reach of children.