SPECIMEN #MEMBERS-
Verified
VitaminsMember's Mark
Vitamin D3 5000 IU
5000 IU vitamin D for the 42% of Americans who are deficient. 400 softgels, over a year supply. Get a blood test to confirm you need this dose. Once levels normalize, Kirkland 2000 IU is fine for maintenance.
7.5/10
VERY GOOD400 softgels of 5000 IU D3 at Sam's Club pricing. Higher dose than Kirkland's 2000 IU. Good for people with documented deficiency. USP Verified.
1 ingredientSoftgels400 servings
We'd recommend thisEvidence
7.0
Dosing
8.0
SynergyN/A (single ingredient)
Whenmorning
Foodwith food
SafetyAll clear
ResearchStrong evidence
What We Like
- 5000 IU for deficiency correction.
- 400 softgels (over 1 year supply).
- USP Verified.
- Sam's Club bulk value.
Watch Out For
- 5000 IU may be excessive for maintenance (2000 IU sufficient for most).
- No K2.
- Should test D levels periodically at this dose.
What We Analyzed
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 at clinical doses
Source: Official product page
Ingredient Breakdown
1 clinical
Clinical Adequate Underdosed Overdosed|Bar = % of clinical dose
IngredientDoseStatusvs. Clinical
In our database (click to learn more) Not yet reviewed
Our Analysis
Best For
D-deficient individuals (42% of US adults).Sam's Club members.
Skip This If
People with already-normal D levels (2000 IU is enough).
Time to Feel
2-4 weeks.
Value
EXCELLENT
How to take: Test levels after 3 months. May reduce to 2000 IU.
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