Pure Encapsulations PureHeart K2D delivers effective doses of **Vitamin K2** and **Vitamin D3** for bone strength and heart health, keeping calcium in your bones and out of your arteries. Your K2 here is 240 mcg as MK-7, sitting above the 90–200 mcg studied range, and it's the form with a roughly 3-day half-life — so a single capsule keeps working all day rather than clearing in hours. The D3 comes in at 1,000 IU (25 mcg), the minimum clinical maintenance level.
These two work better together than apart. D3 drives calcium absorption from your gut, and K2 activates the proteins that route that calcium into bone instead of soft tissue — the reason this pairing supports both bone density and cardiovascular health. D3 also pulls double duty for immune function, one of the areas this product is tagged for.
The one thing to watch is the D3 floor. At 1,000 IU it's enough to maintain healthy blood levels, but if you're correcting a deficiency or get little winter sun, you'll want the label's upper end — 1 capsule twice daily — to reach 2,000 IU. The K2 stays well-covered either way.
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Ingredients (2)
Vitamin K2
100%Dose
240 mcg
Target
90–200 mcg
Form
Premium
Vitamin D
100%Dose
1000 IU
Target
1000–5000 IU
Form
Premium
Other Ingredients (1)
Capsule ShellCapsule
Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.