Description
Vitamin D3 5000 IU + K2 MK-7 — the most important nutrient pairing in bone and immune support supplementation.
Vitamin D3 (cholecalciferol) is the most bioavailable form of vitamin D — directly usable by the body, unlike D2 which requires conversion. At 5000 IU per softgel, this delivers a meaningful maintenance dose consistent with the range used in clinical research on immune function, bone density, and cardiovascular health.*
Vitamin K2 as MK-7 (menaquinone-7) is the long-acting K2 form with a 72-hour half-life — compared to MK-4’s 1–2 hour half-life. MK-7 activates osteocalcin and matrix GLA protein (MGP), directing calcium to bones and away from soft tissues. D3 and K2 work as a pair — D3 increases calcium absorption; K2 directs where that calcium goes.*
Every lot is independently third-party HPLC tested with LC-MS identity verification. Lot-specific Certificate of Analysis published before sale at oligopolypeptides.com/certificates/.
*These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.
Product documentation
Product FAQ
What documentation is available for Vitamin D3 + K2 5000 IU?
Vitamin D3 + K2 5000 IU includes supplement product information, quality standards, and available product documentation where applicable.
How should I use Vitamin D3 + K2 5000 IU?
Follow the product label directions and consult a qualified professional if you have questions about your wellness routine.
Where can I review OligoPoly Laboratories quality standards?
Use the Quality Standards and Certificates pages to review available testing, documentation, and transparency resources.
Is Vitamin D3 + K2 5000 IU a research-use product?
No. This is a supplement-facing product. Research products are sold separately and remain clearly labeled For Research Use Only.
How should I store Vitamin D3 + K2 5000 IU?
Store as directed on the product label, typically in a cool, dry place away from excessive heat and moisture.
Satisfaction guarantee
OligoPoly Laboratories wants every supplement order to arrive accurate, intact, and aligned with the listed product information. If something is wrong with your order, contact support so the issue can be reviewed under our return and refund policy.
