Health Benefits of Vitamin K1 and K2
Vitamin K1 and K2 work together to support your body in several important ways. For bone health, vitamin K activates osteocalcin, a protein that binds calcium to the bone matrix, helping maintain bone density and strength—a benefit that becomes especially valuable as you age. For circulatory health, vitamin K activates matrix Gla protein (MGP), which helps prevent calcium build-up in artery walls, supporting normal vascular function. Some research also suggests vitamin K contributes to cognitive health by protecting brain cells from oxidative stress. The combination of K1 and MK-7 in this formula ensures both fast-acting and sustained support for your overall wellness.
What Is Vitamin K?
Vitamin K is a fat-soluble vitamin essential for blood clotting and bone metabolism. It comes in two primary forms: Vitamin K1 (phylloquinone) and Vitamin K2 (menaquinone). K1 is naturally abundant in green leafy vegetables like spinach and kale, while K2 is produced by gut bacteria and found in fermented foods such as natto. This Invite Health supplement provides both forms—K1 as phytonadione and K2 as MK-7—to offer comprehensive support for bone and circulatory health. Because vitamin K is fat-soluble, taking it with a meal containing healthy fats (like avocado, nuts, or olive oil) enhances absorption.
Vitamin K1 vs K2: Key Differences
Although both are classified as vitamin K, K1 and K2 serve distinct roles in the body. K1 is primarily involved in activating clotting factors in the liver, which is crucial for normal blood coagulation. K2, on the other hand, activates proteins that regulate calcium distribution—directing calcium to bones and teeth while helping prevent it from depositing in arteries. The MK-7 subtype of K2 is particularly valued for its long half-life and sustained bioavailability. By combining K1 and MK-7, this supplement addresses both coagulation and calcium metabolism in a single dose.
How Much Vitamin K Should You Take?
The recommended daily intake for vitamin K varies by age and gender, typically around 90-120 mcg for adults. This supplement provides a convenient dosage: one capsule daily with food. Because vitamin K is fat-soluble, taking it with a meal containing healthy fats enhances absorption. Always follow the label instructions or consult a healthcare practitioner to determine the right dosage for your individual needs.
What to Look for in a Vitamin K Supplement
When choosing a vitamin K supplement, consider the form used. MK-7 is preferred for K2 due to its superior bioavailability and longer duration of action. Look for products that are third-party tested for purity and potency. Dietary features like vegan, gluten-free, and non-GMO can also be important. This Invite Health supplement is dairy-free, gluten-free, soy-free, and vegan, making it suitable for a wide range of dietary preferences. The vegetarian capsules ensure easy consumption without animal-derived ingredients.
Potential Side Effects & Interactions
Vitamin K is generally well-tolerated and safe for most people. However, high doses may interfere with anticoagulant medications such as warfarin, which work by inhibiting vitamin K activity. If you are taking blood thinners, consult your healthcare practitioner before taking any vitamin K supplement. Some individuals may experience mild digestive upset when first starting supplementation. Stick to the recommended dosage to minimise risk. Pregnant or nursing women should seek medical advice before use. Always read the label and follow directions for use.
Frequently Asked Questions
Can I take this supplement with Vitamin D? Yes, Vitamin D and vitamin K work synergistically to support bone health. Vitamin D helps calcium absorption, while vitamin K directs it to bones. Many people take them together for optimal results.
Is this supplement safe for long-term use? Vitamin K is generally safe for long-term use when taken at recommended doses. However, if you have any underlying health conditions or take medications, consult your healthcare practitioner.
What is the difference between K1 and K2 in this product? This product provides both forms: K1 (phytonadione) for blood clotting support and K2 as MK-7 for calcium utilization and arterial health. Together they offer comprehensive support.
Does this supplement need to be refrigerated? No, store in a cool, dry place away from direct sunlight. Keep the bottle tightly sealed.
This product is a Natural Health Product (NHP) and is licensed by Health Canada. Always read the label and follow directions for use. If you are taking anticoagulant medication, consult your healthcare practitioner before use.