Buying research
Best Vitamin D3 Supplements 2026: Forms, Doses & What to Look For
Most vitamin D products are adequate at the ingredient level — D3 is D3. What differentiates quality products: whether they pair with K2, the softgel vs tablet format (fat-soluble absorption), third-party testing, and the dose matching your actual deficiency level.
Conclusion
A softgel containing D3 + K2 (MK-7) in MCT or olive oil is the optimal format. Doses from 1000–5000 IU depending on your baseline level. Test before you supplement and retest after 12 weeks.
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