Vitamin D3 K2 K1 Supplement - D+K Formula for Bone & Heart Health

Our review of this D3 and K vitamin supplement finds it best for people seeking a clean, clinically supported way to top up vitamin D and K intake. The bottom line: it delivers a transparent, third-party tested dose designed to support bone density, cardiovascular health and immune function, which makes it a sensible choice for adults with low sun exposure, older adults concerned about bone health, or anyone wanting a single supplement that combines D3 with both K1 and K2. The review highlights its scientific backing and lack of unnecessary fillers as the single biggest reason to buy.

Key Features

• Clinically effective dose: The formula provides doses supported by peer-reviewed studies to support bone and cardiovascular health.
• Three-ingredient blend: Contains vitamin D3 plus K1 and K2 to address calcium utilization and vascular support in one serving.
• Transparent labeling: Every serving is clearly disclosed with no proprietary blends so you know the exact amounts of active vitamins.
• Clean formulation: Free of artificial food dyes, fillers and unnecessary additives for a purer daily supplement choice.
• Third-party tested: Purity and potency are verified in an ISO 17025 accredited lab to ensure what the label claims is what you get.
• Research-backed: The formulation cites dozens of peer-reviewed studies supporting the D3 and K2 dose and combination.

Who It's For

This supplement is a good match for adults who need reliable vitamin D3 and K support-people with limited sun exposure, those focused on bone density and muscle function, and anyone wanting to support immune and cardiovascular health with one product. It also suits buyers who prioritize clean labels and third-party testing.

People who should look elsewhere include those who require specialized medical dosing prescribed by a clinician or users who prefer single-vitamin products rather than combined formulations. If you need gummy or flavored formats, this product is aimed at standard capsule or tablet users.

Pros & Cons

Pros

• Clinically informed dose that supports vitamin D levels and related health benefits.
• Clear, non-proprietary label that shows exactly what is in each serving.
• Clean ingredients without artificial dyes or fillers for a purer supplement choice.
• Third-party ISO 17025 lab testing for potency and purity gives added confidence.

Cons

• Limited format options; those preferring flavored or chewable forms may need a different product.
• Not intended to replace clinician-prescribed therapeutic dosing for deficiency treatment.

Specifications

Brand	LEGION
Key Ingredients	Vitamin D3, Vitamin K2, Vitamin K1
Primary Benefits	Bone density support, cardiovascular health, immune and muscle function
Label Transparency	Full disclosure, no proprietary blends
Third-Party Testing	ISO 17025 accredited lab tested for purity and potency
Formulation Extras	No artificial food dyes or fillers

Our Verdict

This D3 plus K1 and K2 supplement is a solid option for adults seeking a research-backed, clean vitamin to support bones, heart and immune function. Its transparent label and ISO 17025 testing make it good value for anyone wanting a trustworthy combined D and K product, while those needing specialized medical dosing should consult a clinician first.

Frequently Asked Questions

Does this combine both K1 and K2?
Yes. The formula includes vitamin K1 and K2 alongside vitamin D3 to support calcium metabolism and cardiovascular health.

Is the product third-party tested?
Yes. Each bottle is tested for purity and potency in an ISO 17025 accredited third-party lab.

Who should avoid this product?
People on anticoagulant medications or those requiring clinician-supervised therapeutic dosing should consult their healthcare provider before use.