Vitamin D3 and K2, formulated to work together.
5,000 IU of D3 to help address the deficiency common in indoor lifestyles, paired with MK-7 K2 so calcium is directed to bone rather than to arteries.
How It Works
Vitamin D3 deficiency is one of the most widespread nutrient gaps in the modern world. Estimates suggest that over 40% of adults in the United States are deficient, not because of poor diet, but because of the way we live. Modern indoor lifestyles significantly reduce our exposure to the sunlight that triggers D3 synthesis in the skin.
D3 is not simply a vitamin. It functions as a hormone, binding to receptors present in virtually every cell in the body. It plays a direct role in immune regulation, calcium absorption, cardiovascular function, and metabolic health. When D3 is depleted, these processes are compromised, often without obvious symptoms until the deficiency is significant.
K2 is added for a specific and important reason: Vitamin D3 increases calcium absorption, but without adequate K2, that calcium can deposit in arteries rather than bones. K2 (as MK-7, the most bioavailable form) activates proteins that direct calcium precisely where it belongs.
This is why D3 and K2 are formulated together, not separately.
Ingredients
VITAMIN D3 (as Cholecalciferol)
5,000 IU (125 mcg) per capsule
Cholecalciferol is the form of Vitamin D3 produced naturally in the skin through sun exposure, and the form most efficiently converted to the active hormone calcitriol. At 5,000 IU, this dose is formulated to meaningfully address deficiency in individuals with limited sun exposure, a common condition in populations that spend the majority of daylight hours indoors.*
VITAMIN K2 (as Menaquinone-7, MK-7)
100 mcg per capsule
MK-7 is the long-chain form of K2 derived from fermentation. Compared to shorter-chain K2 forms (MK-4), MK-7 has a significantly longer half-life in the body, providing sustained activation of the carboxylation proteins that regulate calcium distribution. It supports arterial elasticity and directs calcium to bone tissue where it is needed.*
Other ingredients: Microcrystalline Cellulose, Starch, Colloidal Silicon Dioxide, Talc
Free from: Artificial colours · Preservatives · Gluten · Animal products
Certifications: Vegan · Non-GMO · cGMP Certified
How to Use
Take 1 capsule daily with a meal containing dietary fat, since D3 is fat-soluble and absorption improves with food.
If you are pregnant, nursing, taking medications, or have a medical condition, consult your healthcare professional before use.
Frequently asked questions
Why is K2 included with D3?
Vitamin D3 increases calcium absorption, but without K2, that calcium can deposit in arteries rather than bones. K2 (as MK7, the most bioavailable form) activates proteins that direct calcium into bone tissue and away from soft tissue. D3 and K2 together are significantly more effective than D3 alone.
When is the best time to take it?
Take it with your largest meal of the day, ideally one containing some healthy fat. Both D3 and K2 are fat-soluble vitamins and absorb substantially better with dietary fat than on an empty stomach.
How do I know if I am deficient in Vitamin D?
Deficiency is very common, particularly in people who spend most of their time indoors or live in northern latitudes. Symptoms can include fatigue, low mood and frequent illness. A 25(OH)D blood test confirms your level. Ask your doctor to include it at your next check-up.
How long before I see results?
Vitamin D works systemically rather than producing an immediate sensation, so this is less about what you feel day to day and more about restoring your levels. With consistent daily use, blood levels of vitamin D typically rise meaningfully over 8 to 12 weeks, though the exact pace depends on your starting point and how much sun exposure you get. If you began significantly deficient, full repletion can take a few months. We recommend retesting your vitamin D level after about 3 months to confirm you have reached an optimal range. K2 works alongside D3 throughout, directing the calcium D3 helps you absorb towards bone rather than soft tissue.