Practitioner-grade vitamin k2 by Ortho Molecular Products
Ortho Molecular Products' Vitamin K2 delivers menaquinone, the bioactive form of vitamin K, formulated to support healthy bone mineralization and cardiovascular function. Designed with a practitioner-grade standard, it's well-suited for adults focused on maintaining long-term skeletal integrity and arterial health.
Why It's Worth Considering: Ortho Molecular Products is a clinician-trusted brand known for rigorous raw material sourcing and manufacturing standards — this K2 formulation reflects that attention to bioactive form selection over less active alternatives.
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.
This product is in the Apotheca marketplace and has been assigned a Gabriel Score of 95 based on brand quality signals and category baseline. Detailed reviews from Amazon, iHerb, Reddit, practitioner citations, and clinical research will appear here as they're aggregated.
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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.
