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Kirkland Signature Vitamin D3 2000 IU
SPECIMEN #KIRKLAND
Verified
VitaminsKirkland Signature

Vitamin D3 2000 IU

600 softgels for under $10. Nearly 2 years of vitamin D3 at the ideal maintenance dose. USP Verified. Costs less than a Costco hot dog combo. The best supplement value in America. Just add K2 separately.

7.8/10
VERY GOOD

600 softgels for under $10 at Costco. That's nearly 2 years of vitamin D3 at the right dose. USP Verified. The best value vitamin D supplement in America.

1 ingredientSoftgels600 servings
We'd recommend this
Evidence
7.0
Dosing
7.0
SynergyN/A (single ingredient)
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Whenmorning

With fat-containing meal.

Foodwith food

Fat-soluble.

SafetyAll clear
ResearchStrong evidence

Vitamin D3 is extensively studied.

What We Like

  • 600 softgels (20 months supply).
  • Under $10 at Costco.
  • USP Verified.
  • 2000 IU is the maintenance sweet spot.

Watch Out For

  • No K2 included.
  • Soybean oil carrier.

What We Analyzed

Vitamin D3 2000 IU Supplement Facts

Verified Supplement Facts

Every dose checked against clinical research

We analyzed the actual supplement facts panel for this product. Every ingredient dose below was cross-referenced with published clinical trials to determine if it matches what studies actually use.

1 ingredients analyzed1 underdosed

Source: Official product page

Ingredient Breakdown

1 underdosed
Clinical Adequate Underdosed Overdosed|Bar = % of clinical dose
IngredientDoseStatusvs. Clinical
Vitamin D310.0

Cholecalciferol

50 mcgUNDERDOSED
50%
50 mcg

of 4000IU

UNDERDOSED
50%
In our database (click to learn more) Not yet reviewed

Our Analysis

Best For

Costco members. Everyone.

Skip This If

Hypercalcemia.

Time to Feel

2-4 weeks.

Value

EXCELLENT

How to take: Year-round.

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