Vitamin K2 + D3 Supplement — Heart, Bone & Immune Support, 5000IU, 60 Capsules

Most people take Vitamin D3. Far fewer get the other half of the equation. Without Vitamin K2, the calcium your body absorbs can end up in the wrong place — your arteries, not your bones. CogniTune's K2+D3 pairs these two nutrients the way nature intended, supporting strong bones, a healthy heart, and a well-functioning immune system in one simple daily capsule.

Each capsule delivers 5,000 IU of Vitamin D3 alongside MK-7 Vitamin K2 — the most bioavailable form — to ensure calcium is directed into bone tissue rather than soft tissue. Ideal for anyone with low sun exposure, over 40, or managing bone density concerns. Non-GMO, free from synthetic fillers. 60 capsules = a full 2-month supply at one capsule per day.

Standard shipping always free.

Frequently Asked Questions

Why do Vitamin K2 and D3 need to be taken together?

Vitamin D3 dramatically increases the amount of calcium your body absorbs from food. Vitamin K2 then acts as the traffic controller — activating proteins that direct that calcium into your bones and teeth, rather than allowing it to deposit in your arteries and soft tissue. Taking D3 without K2 can increase calcium absorption without ensuring it ends up where it belongs. The two nutrients work as a pair for safe, effective calcium utilization.

What does "MK-7" mean, and why does it matter?

MK-7 (menaquinone-7) is the most bioavailable and longest-lasting form of Vitamin K2. Unlike MK-4, which is rapidly metabolized, MK-7 stays active in the body for over 24 hours, making once-daily dosing highly effective. CogniTune's formula uses MK-7 specifically because of its superior absorption and sustained activity.

Is 5,000 IU of Vitamin D3 safe for daily use?

5,000 IU is a commonly used maintenance dose for adults with low sun exposure or confirmed deficiency. However, optimal dosing depends on your current levels. If you haven't had your Vitamin D levels tested recently, it's a good idea to do so and consult your healthcare provider about the right dose for your situation. Vitamin D is fat-soluble, so it's best taken with a meal containing fat for optimal absorption.

Who benefits most from a K2+D3 supplement?

People who spend most of their time indoors, live in northern latitudes, work night shifts, are over 40, have darker skin tones, or are managing bone density concerns are among those who benefit most. K2 is particularly important for anyone taking D3 regularly and for those focused on cardiovascular and bone health.

Can I take Vitamin K2+D3 with food?

Yes — and it's actually recommended. Both Vitamin D3 and K2 are fat-soluble vitamins, meaning they absorb best when taken alongside a meal that contains some dietary fat. Taking your capsule with breakfast or lunch works well for most people.

How long before I notice the benefits of K2+D3?

Vitamin D levels in the blood typically begin to rise within a few weeks of consistent supplementation, but it can take 2–3 months of daily use to reach optimal levels. Benefits like improved energy, immune resilience, and mood support from correcting a deficiency are often reported within 4–8 weeks. Bone health improvements occur over months and years of consistent intake.

We ship anywhere in the U.S. within 3–7 business days via FREE standard shipping.   Expedited shipping options are available for an additional shipping fee.  As soon as your order ships, you’ll get tracking so you can manage your delivery.