01Gold Standard
Vitamin D3 2000 IU
$15$0.04/day
USP-verifiedD3-formolive-oil-basevalue
USP verified for potency and purity. D3 (cholecalciferol) is the form your body makes from sun. Single ingredient with no fillers.
Quality Score12/12
Purity
Evidence
Transparency
Value
Strong Evidence
◈
Ingredients & Purity
Vitamin D3 in organic olive oil base. No soy, gluten, or artificial additives.
◇
Scientific Evidence
USP verified. D3 shown to be 87% more effective than D2 in raising blood levels.
○
Brand Transparency
FDA-registered facility. USP verification means third-party testing of every batch.
□
Value Assessment
$15 for 360 soft gels (1-year supply). Exceptional value at $0.04/day.
Why Not Alternatives?
Many D supplements use D2 (ergocalciferol) which is less effective. Carlson's USP verification is rare in the category.