D3 raises 25-OH vitamin D. K2 is added in many stacks for calcium-routing theories. Test blood levels instead of guessing mega-doses.
Supplements
Strong evidence
Vitamin D3 + K2
The pair most indoor humans still miss.
How to use
Take with a fat-containing meal. Re-test 25-OH D after 8–12 weeks.
Details
- Ingredients
- Vitamin D3, Vitamin K2 (MK-7)
- Benefits
- Bone support, Immune tone, Mood in deficiency
- Dosage
- Typically 1000–4000 IU D3; confirm with labs
- When to take
- Morning, With food
- Side effects
- Excess D can raise calcium. K2 caution with anticoagulants.
- Scientific evidence
- D deficiency is common; K2 add-on evidence is weaker than D3 itself.
- Form
- Softgel
- Third-party tested
- Yes
Editorial rating ★ 4.6
Correct a deficiency. Do not treat 10,000 IU as a personality.
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