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Solving a Problem Vitamin D Supplements Alone Don't Address

Solving a Problem Vitamin D Supplements Alone Don't Address

Taking vitamin D3 alone helps the body absorb more calcium, but it doesn't necessarily ensure that calcium ends up where it's actually needed. California Gold Nutrition's Vitamin D3 + K2 specifically pairs these two nutrients together to address that exact gap.

A genuinely synergistic, not just combined, formula

Vitamin D3 supports the body's normal absorption of calcium, while Vitamin K2 helps ensure that calcium is properly utilised to maintain healthy bones — rather than two unrelated vitamins bundled together, they work through genuinely complementary mechanisms.

MK-7 as a specifically chosen, superior form of K2

The formula uses Vitamin K2 as Menaquinone-7 (MK-7) — a form with a notably longer half-life of around 72 hours compared to the 1-2 hour half-life of the MK-4 form found in many cheaper K2 products, meaning once-daily dosing remains effective throughout the day.

A substantial, clearly stated dose

Each serving delivers 125 mcg (5,000 IU) of Vitamin D3 alongside 120 mcg of Vitamin K2 — specific, verifiable dosing rather than a vague "supports bone health" claim with no backing numbers.

MK-7 directing calcium specifically into bone, not soft tissue

MK-7 activates vitamin K-dependent proteins including osteocalcin and matrix Gla protein — these proteins specifically direct calcium into bone structure and help keep it from depositing in soft tissues like arterial walls, addressing a genuine, specific physiological concern with long-term D3 supplementation alone.

MCT oil formulated directly into each capsule

Rather than requiring these fat-soluble vitamins to be taken separately with a fatty meal, the formula is pre-formulated with MCT oil directly inside every veggie capsule — helping the body make use of the vitamins with every single dose.

A genuinely long-lasting supply

At 180 capsules, the bottle provides a full 6-month supply at one capsule daily — reducing the frequency of reordering compared to standard 30- or 60-count bottles.

Independently verified formulation standards

The product carries iTested verification from an independent lab, alongside being formulated without gluten, GMOs, or soy — third-party quality verification rather than relying solely on label claims.

Genuinely informed, detailed customer feedback

Independent reviews specifically highlight the scientific reasoning behind this D3/K2 combination, with reviewers explaining that long-term high-dose D3 alone can risk vascular calcification, while K2 as MK-7 helps guide that calcium specifically into bones — reflecting a genuinely well-informed customer base rather than generic praise.

At a glance

Who it suits

This supplement suits anyone with limited sun exposure or low dietary K2 intake wanting convenient, synergistic daily support for bone and cardiovascular health, particularly those already supplementing D3 long-term. Anyone currently taking blood-thinning medication should consult a doctor before starting Vitamin K2 supplementation, since Vitamin K can interact with certain anticoagulant medications. Shop California Gold Nutrition Vitamin D3 + K2 on iHerb — **

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