Strong consensus that K2 MK7 is underrated and essential for directing calcium to bones and away from arteries, with broad systemic benefits.
Douglas Labs Vitamin K2 with Menaquinone-7 (MK-7) delivers a long-chain form of vitamin K2 that remains active in the body longer than shorter-chain forms like MK-4, supporting calcium utilization, bone matrix integrity, and cardiovascular health. Formulated soy-free, it's a practical option for individuals avoiding soy-derived ingredients — a common concern with MK-7 products. Best suited for adults focused on bone density maintenance and healthy arterial function.
Why It's Worth Considering: MK-7 is recognized for its superior half-life and bioavailability compared to MK-4, and Douglas Labs' practitioner-grade manufacturing standards provide confidence in potency and purity.
Vitamin K1 (phylloquinone) is for blood clotting — abundant in leafy greens. Vitamin K2 (menaquinone) directs calcium metabolism — puts calcium in bones and keeps it out of arteries. Most people get enough K1 from diet but are deficient in K2, which is found mainly in fermented foods (natto, certain cheeses) and animal liver.
MK-7 is the most bioavailable and longest-acting form of K2, with a half-life of ~3 days (vs ~1 hour for MK-4). This means a single daily dose maintains therapeutic blood levels 24/7. MK-7 is derived from natto (fermented soybeans) and has the strongest clinical evidence for bone density and arterial health.
For general health with D3: 100-200mcg MK-7 daily. For osteoporosis: 180-360mcg. For cardiovascular calcification prevention: 180-200mcg. The dose should scale with your D3 intake — higher D3 doses require more K2 to handle the increased calcium absorption.
If you're on warfarin/Coumadin: NO — K2 counteracts warfarin and will destabilize your INR. Consult your cardiologist. If you're on newer anticoagulants (Eliquis/apixaban, Xarelto/rivaroxaban, Pradaxa/dabigatran): these are NOT vitamin K-dependent, so K2 is safe. Always confirm with your prescribing physician.
Ask Gabriel for personalized stacking recommendations.
No significant interactions identified. Always consult your healthcare provider.
† 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.
