DOSERANKEVIDENCE-BASED SUPPLEMENTS
DOSERANKEVIDENCE-BASED SUPPLEMENTS© 2026 DoseRank · Evidence-based supplements
Methodology·Outcomes·Categories
DOSERANKEVIDENCE-BASED SUPPLEMENTS
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  3. ·Iron status
  4. ·Iron status

Improve iron status

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What this outcome means

Iron status reflects whether your body has enough iron on hand to make red blood cells and carry oxygen, and whether your stores are running low or topped up. On DoseRank it maps to a defined health outcome built from human studies on ferritin, serum iron, transferrin saturation, and hemoglobin – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Running on emptyFatigue, pallor, or breathlessness that point to depleted iron stores.
Heavy-period monthsMenstrual blood loss that steadily draws iron reserves down.
Plant-based eatersVegetarian or vegan diets that supply iron in less absorbable forms.
Stack buildersAlready taking supplements such as Ferrous Bisglycinate and want the dose right.

Evidence level

92Strong

Ferrous Bisglycinate – has strong public evidence. DoseRank looks at both evidence quality and formula fit. A DoseFit Score of 69 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

Ferrous Bisglycinate is the best supported ingredient signal for this outcome.

Dose partly matchedDoseFit 69

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Ferrous Bisglycinate 27 mg vs 15-120 mg.

ProcessedProcessedEvery product DoseRank ingested and scored for this outcome, before any availability or relevance filtering.
5.8k
AvailableAvailableOf the products processed, how many are currently in stock and purchasable from a tracked retailer.
5.8k
IngredientsIngredientsNumber of relevant ingredients for this outcome. Each is judged on its own evidence and dose fit score.
23
BrandsBrandsNumber of unique brands represented across the ranked products for this outcome.
459
CoverageCoverageHigher is betterShare of the relevant, in-stock market DoseRank has structured data for. Higher coverage means fewer blind spots in the ranking.
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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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.

DoseRank is not medical advice. Scores summarize publicly available product and study data to help you compare options; they are not a diagnosis or a treatment recommendation. If you are pregnant, breastfeeding, taking medication, or managing a health condition, consult a qualified clinician before starting any supplement. 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. Statements about supplements have not been evaluated by the FDA. Products are not intended to diagnose, treat, cure, or prevent any disease.

Relevant ingredients

Which ingredient types matter for iron statusOpen to see which ingredient types matter for iron status

795 products across 2 ingredient types — open to filter the ranking.
Use types to filter ranked products

Minerals & Trace Elements

725 products

Inorganic nutrients from calcium to zinc. The chemical form drives absorption – chelates and citrates usually beat cheap oxides.

Typical: , , , ...

Glandulars & Animal-Derived Extracts

70 products

Animal gland and organ-tissue extracts used traditionally for targeted organ support. Purity and grass-fed sourcing are the key quality markers.

Top decision cards

Best products for iron status

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for iron status

#1

Doctor's Best, High Absorption Iron, 27 mg, 120 Tablets

Doctor's Best$0.07 / serving4.8 · 11,501Available now

Why this ranks here

  • Evidence fitFerrous Bisglycinate is the strongest evidence signal for this outcome.
  • Dose fitFerrous Bisglycinate at 27 mg lands inside the studied 15-120 mg window.
  • Price / serving$0.07 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.

Trade-offs

Evidence depth trails the rest of this list

The numbers

87
89
69
85

27 mgIn rangeinside the studied 15-120 mg window
Compare top 3Product dataOpen at retailer

The rest of the ranking · DoseRank

Top 10 ranked products
#ProductPrice
Last updated Jun 12, 2026

DoseRank is not medical advice. Scores summarize publicly available product and study data to help you compare options; they are not a diagnosis or a treatment recommendation. If you are pregnant, breastfeeding, taking medication, or managing a health condition, consult a qualified clinician before starting any supplement. 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. Statements about supplements have not been evaluated by the FDA. Products are not intended to diagnose, treat, cure, or prevent any disease.

Comparison preview

Compare the top 3, side by side

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The top three for the current view — free to read, no account. Saving, exporting, alerts and the full filter set unlock once you sign in or build a personal report.

Metric
#1Doctor's Best, High Absorption Iron, 27 mg, 120 TabletsDoctor's Best · $0.07/serving
#2California Gold Nutrition, Ferrochel® Iron (Bisglycinate), 36 mg, 90 Veggie CapsulesCalifornia Gold Nutrition · $0.08/serving
#3Solgar, Chelated Iron, 100 Tablets (25 mg per Tablet)Solgar · $0.08/serving
Composite878787
Clinical898989
Dose fit697169
Value858384
Popularity989996
Key dosages & price · raw values
27 mg36 mgHighest25 mg
Rating
Number of ratings
Price
Price per serving
Serving size
Trust

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Unlocks with accountFull list of ingredients and dosagesFull list of metricsPrice-drop alertsRanking-changes alertsPersistent stack