Formulated with purpose. Every ingredient earns its place, chosen for quality, backed by science, and built for performance.
Description
Core Med Science Vitamin D3 + K2 combines 2,000 IU of Vitamin D3 with 100 mcg of Vitamin K2 as Menaquinone-7 (MK-7) in a formula designed around how these two vitamins actually work together. D3 supports calcium absorption, and K2 ensures that calcium ends up where it belongs: in your bones, not your arteries. It sounds simple, but most standalone vitamin D supplements skip this step entirely.
The K2 in this formula uses the MK-7 form specifically, which remains active in the body significantly longer than the MK-4 form found in many other supplements. Together, these two vitamins support bone density, immune function, mood, energy, and cardiovascular health in one clean daily capsule.
This formula is particularly relevant for anyone who spends most of their time indoors, lives in a low-sun climate, or simply wants a foundational supplement they can trust year-round.
NSF Certified for Sport®, third-party tested and verified free of over 270 banned substances. One capsule with a meal, every day.
Benefits
Bone Density and Long-Term Skeletal Health Vitamin D3 supports calcium absorption in the gut, while K2 activates the proteins that bind calcium into bone tissue. Research in healthy adults shows this combination supports bone mineral density and reduces fracture risk over time, making it a meaningful investment in how your body ages.
Immune System Support 2,000 IU of Vitamin D3 is one of the most well-researched daily doses for maintaining healthy immune function. It is especially relevant during winter months or for those with limited sun exposure, when vitamin D levels are most likely to fall below optimal.
Mood, Energy, and Mental Clarity Vitamin D plays a role in serotonin and dopamine activity, and research consistently links healthy D levels with better mood, reduced fatigue, and improved cognitive clarity. For desk workers, students, or anyone spending long hours indoors, this is one of the more impactful nutritional gaps to address.
Cardiovascular Support K2 as MK-7 helps prevent calcium from accumulating in blood vessels, supporting healthy arterial flexibility over time. This is the key reason the D3 and K2 pairing matters: D3 increases calcium absorption, and K2 makes sure it stays out of soft tissue.
NSF Certified for Sport: Purity You Can Trust Third-party certified free of over 270 WADA and NCAA banned substances. Every batch is independently tested for label accuracy and contaminant safety with no compromises.
Ingredients
Vitamin D3 (as Cholecalciferol) 2,000 IU (250% DV)
Vitamin K2 (as Menaquinone-7) 100 mcg (83% DV)
Other Ingredients: Microcrystalline Cellulose (MCC), Magnesium Stearate, Silicon Dioxide.
Warnings and Precautions
Consult your physician before use if you are pregnant, nursing, have a known medical condition, or are taking any medications, particularly blood thinners, as Vitamin K2 may interact with anticoagulant medications.
Keep out of reach of children.
Do not exceed the recommended serving size unless directed by a healthcare provider.
Store in a cool, dry place away from direct sunlight.
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.
WARNING: Consuming this product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
