Is a higher dose always better?

No. Dose-fit rewards landing inside the range studied for the outcome — over-dosing (common with melatonin) or under-dosing both lower the score. The goal is the effective dose, not the biggest number.

What does the Value score mean?

The Value score compares a product's price per serving with clinically relevant products ranked for the same outcome. A score of 50 is the typical price; above 50 means better value than typical, while below 50 means the product costs more than typical. It is a 0–100 value signal, not a percentile.

Why is the cheapest product not #1?

Cost is only one input. The cheapest pick here is a citrate form with weaker absorption and a stock-risk flag, so it leads on Value-for-cost but trails on the composite that also weighs evidence, dose fit and availability.

Are these affiliate links?

Retailer links may be affiliate links and DoseRank may earn a commission. Rankings and placement are determined by the scoring model only — never by payment from a brand.

Is this medical advice?

No. DoseRank summarizes evidence to help you choose; it is not a substitute for a clinician, especially if you are pregnant, breastfeeding, on medication, or managing a health condition.

Improve vitamin D status

What this outcome means

Vitamin D status reflects whether your body holds enough vitamin D to support normal bone, muscle, and immune function. On DoseRank it maps to a defined health outcome built from human studies on serum 25-hydroxyvitamin D levels, deficiency and sufficiency thresholds, and seasonal variation – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Indoor lifestylesPeople who spend most daylight hours working inside.

Low-sun seasonsNorthern winters where sunlight is scarce for months.

Deeper skin tonesSkin that makes less vitamin D from the same sun exposure.

Stack buildersAlready taking supplements such as Vitamin D3 (Cholecalciferol) and want the dose right.

Evidence level

92Strong

Vitamin D3 (Cholecalciferol) – has strong public evidence. DoseRank looks at both evidence quality and formula fit. A DoseFit Score of 67 means this product's ingredient forms and doses are close to what was used in the studies behind this ranking - DoseRank weights each product ingredient.

Best ingredients

Vitamin D3 (Cholecalciferol) is the best supported ingredient signal for this outcome.

Dose partly matchedDoseFit 67

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Vitamin D3 (Cholecalciferol) 500 IU vs 400-5000 IU.

Processed

5.2k

Available

5.2k

Ingredients

Brands

472

Coverage

100%

How to read the scores

What every metric means

Each score is 0–100. Higher is better for every metric below.

CompositeThe overall DoseRank score — a weighted blend of clinical strength, evidence, dose fit, trust and value.Higher is better

ClinicalHow strongly the formula's ingredients and doses match what clinical studies used for this outcome.Higher is better

EvidenceHow much published human research backs the formula's key ingredients for this outcome — both how many studies exist and how strong they are.Higher is better

ValueHow the price per serving compares with similar products for this outcome — 50 is the typical price, higher means better value for your money.Higher is better

TrustHow well customers rate this product, with extra weight given to ratings backed by a large number of reviews.Higher is better

PopularityHow strongly this product sells compared with the other ranked products for this outcome.Higher is better

This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →

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Get a personal report

A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.

Questions

Frequently asked

Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.

Improve vitamin D status

What this outcome means

Who it's for

Indoor lifestylesPeople who spend most daylight hours working inside.

Low-sun seasonsNorthern winters where sunlight is scarce for months.

Deeper skin tonesSkin that makes less vitamin D from the same sun exposure.

Stack buildersAlready taking supplements such as Vitamin D3 (Cholecalciferol) and want the dose right.

Evidence level

92Strong

Best ingredients

Vitamin D3 (Cholecalciferol) is the best supported ingredient signal for this outcome.

Dose partly matchedDoseFit 67

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Vitamin D3 (Cholecalciferol) 500 IU vs 400-5000 IU.

Processed

5.2k

Available

5.2k

Ingredients

Brands

472

Coverage

100%

Relevant ingredients

Which ingredient types matter for vitamin d statusOpen to see which ingredient types matter for vitamin d status

3.9k products across 1 ingredient types — open to filter the ranking.

Use types to filter ranked products

Vitamins

3.9k products

Essential micronutrients the body can't make in sufficient amounts. Fat-soluble ones (A, D, E, K) store up; water-soluble ones need regular topping-up.

Typical: , ,

Top decision cards

Best products for vitamin d status

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for vitamin d status

ChildLife Essentials, Vitamin D3, Natural Berry, 12.5 mcg (500 IU), 1 fl oz (30 ml)

ChildLife Essentials$0.08 / serving4.9 · 63,872Available now

Also helps with

Respiratory infection incidence

Why this ranks here

Evidence fitVitamin D3 (Cholecalciferol) is the strongest evidence signal for this outcome.
Dose fitVitamin D3 (Cholecalciferol) at 500 IU lands inside the studied 400-5000 IU window.
Price / serving$0.08 per serving — low price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustStrong trust signals — consistently high marks from verified buyer ratings.

The numbers

500 IUIn rangeinside the studied 400-5000 IU window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Micro Ingredients, Vitamin D3 + K2, 300 Softgels

Micro IngredientsClinical89Dose fit90Popularity91$0.09/ serving

Paradise Herbs, Earth's Blend®, One Daily Superfood Multi-Vitamin, No Iron, 120 Vegetarian Capsules

Paradise HerbsClinical89Dose fit70Popularity91$0.22/ serving

Amazing Nutrition, Amazing Formulas, Calcium Magnesium Zinc + Vitamin D3, 300 Tablets

Amazing NutritionClinical89Dose fit68Popularity76$0.16/ serving

Paradise Herbs, Earth's Blend, One Daily Superfood Multi-Vitamin with Iron, 120 Vegetarian Capsules

Paradise HerbsClinical89Dose fit70Popularity84$0.22/ serving

Paradise Herbs, Earth's Blend, Vitamin D3, 90 Vegetarian Capsules

Paradise HerbsClinical89Dose fit90Popularity50$0.12/ serving

Gaspari Nutrition, ANAVITE®, The Ultimate Performance Multi-Vitamin, 180 Tablets

Gaspari NutritionClinical89Dose fit70Popularity91$0.55/ serving

KAL, Dinosaurs®, Vitamin D-Rex™, Watermelon, 15 mcg (600 IU), 120 Micro Tablets

KALClinical89Dose fit68Popularity30$0.07/ serving

KAL, Calcium Citrate D-3, 180 Tablets

KALClinical89Dose fit70Popularity50$0.30/ serving

Vitamatic, Copper Bisglycinate, 240 Tablets

VitamaticClinical89Dose fit75Popularity50$0.11/ serving