The short answer · All-cause mortality
Take vitamin d3 (cholecalciferol) for all-cause mortality. This is the one to buy.
Micro Ingredients, Vitamin D3 + K2, 300 Softgels
4.9· 2,088 ratings· $0.09/serving
Vitamin D3 (Cholecalciferol) 5000 IU — higher than the studied 800-2000 IU window
Of 4,832 products scored for All-cause mortality, Micro Ingredients, Vitamin D3 + K2, 300 Softgels ranks #1 with a DoseRank score of 87. Vitamin D3 (Cholecalciferol) has moderate human evidence for this outcome.
Retailer links may be affiliate links. Rankings and placement are never paid.
The form“Why Vitamin D3 (Cholecalciferol)?”Evidence Moderate evidence
Vitamin D3 (Cholecalciferol) has moderate human evidence for this outcome.
- Vitamin D3 (Cholecalciferol)The pick
Moderate evidence · 5000 IU
The form made by skin on sun exposure and used in most supplements; converts to active calcitriol and raises serum 25(OH)D more effectively than D2.
The dose“Is the dose actually effective?”Dose fit 94
Vitamin D3 (Cholecalciferol) at 5000 IU is higher than the studied 800-2000 IU window.
Vitamin D3 (Cholecalciferol)
Studied window 800-2000 IU · this pick 5000 IU
The ranking“Why should I trust this pick?”Trust 86
Strong trust signals — consistently high marks from verified buyer ratings. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.
- 4,832 products scored
- Never paid placement
- Evidence level: Moderate · 78
- 386 brands
- 7 ingredients
The price“Can I do better than $0.09 a serving?”Value 85
$0.09 per serving — low price tier for this outcome. The cheapest ranked pick here is $0.08 per serving.
- 5Natural Factors, Vitamin D3, 120 SoftgelsScore 83 · $0.08/servingiHerb
- 7Nature's Way, Vitamin D3, 50 mcg (2,000 IU), 120 SoftgelsScore 82 · $0.08/servingiHerb
Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.
Ready?
The #1 pick is $0.09 a serving.Micro Ingredients, Vitamin D3 + K2, 300 Softgels — in stock at a tracked retailer.
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Frequently asked
Micro Ingredients, Vitamin D3 + K2, 300 Softgels ranks #1 for All-cause mortality with a DoseRank score of 87. The score blends clinical strength, evidence, dose fit, trust signals and value across 4,832 products scored for this outcome.
Vitamin D3 (Cholecalciferol) has moderate human evidence for this outcome.
Vitamin D3 (Cholecalciferol) at 5000 IU is higher than the studied 800-2000 IU window. DoseRank scores this product's dose fit at 94 out of 100.
Micro Ingredients, Vitamin D3 + K2, 300 Softgels works out at $0.09 per serving. $0.09 per serving — low price tier for this outcome. The cheapest ranked pick here is $0.08 per serving.
No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.