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.

Increase red blood cell count

What this outcome means

Red blood cell count is the number of oxygen-carrying cells in your blood, a core marker of how well oxygen reaches your tissues. On DoseRank it maps to a defined health outcome built from human studies on red cell counts, hemoglobin concentration, and hematocrit levels – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Persistently tiredPeople dragging through the day with low energy and pallor.

Low blood resultsAnyone whose bloodwork flagged counts below the normal range.

Altitude and enduranceAthletes and high-altitude dwellers leaning on oxygen delivery.

Stack buildersAlready taking supplements such as Hydroxocobalamin and want the dose right.

Evidence level

92Strong

Hydroxocobalamin – 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

Hydroxocobalamin 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: Hydroxocobalamin 1 mg vs 1-2 mg.

Processed

Available

Ingredients

Brands

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.

Increase red blood cell count

What this outcome means

Who it's for

Persistently tiredPeople dragging through the day with low energy and pallor.

Low blood resultsAnyone whose bloodwork flagged counts below the normal range.

Altitude and enduranceAthletes and high-altitude dwellers leaning on oxygen delivery.

Stack buildersAlready taking supplements such as Hydroxocobalamin and want the dose right.

Evidence level

92Strong

Best ingredients

Hydroxocobalamin 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: Hydroxocobalamin 1 mg vs 1-2 mg.

Processed

Available

Ingredients

Brands

Coverage

100%

Relevant ingredients

Which ingredient types matter for red blood cell countOpen to see which ingredient types matter for red blood cell count

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

Use types to filter ranked products

Vitamins

38 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 red blood cell count

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for red blood cell count

Source Naturals, HydroxoCobalamin, Cherry, 1 mg, 240 Lozenge

Source Naturals$0.09 / serving4.8 · 1,722Available now

Also helps with

Vitamin B12 status

Homocysteine

Neuropathy symptoms

Why this ranks here

Evidence fitHydroxocobalamin is the strongest evidence signal for this outcome.
Dose fitHydroxocobalamin at 1 mg lands inside the studied 1-2 mg window.
Price / serving$0.09 per serving — mid price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustSolid trust signals from buyer ratings, with room to grow.

The numbers

1 mgIn rangeinside the studied 1-2 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Swanson Vitamins, B12 Hydroxycobalamin, Mixed Berry, 1,000 mcg, 60 Chewable Tabs

Swanson VitaminsClinical86Dose fit67Popularity68$0.24/ serving

Seeking Health, Hydroxo-Adeno B12, 2,000 mcg, 60 Lozenges

Seeking HealthClinical86Dose fit67Popularity84$0.38/ serving

Advanced Orthomolecular Research AOR, Hydroxy B12, 1,000 mcg, 60 Lozenges

Advanced Orthomolecular Research AORClinical86Dose fit67Popularity68$0.33/ serving

Source Naturals, Advanced B-12 Complex, 5 mg, 60 Lozenges

Source NaturalsClinical88Dose fit82Popularity30$0.27/ serving

Global Healing, Vitamin B12, 5,000 mcg, 2 fl oz (59.2 ml)

Global HealingClinical88Dose fit82Popularity50$0.63/ serving

Global Healing, Vitamin B12, 5,000 mcg, 1 fl oz (29.6 ml)

Global HealingClinical88Dose fit82Popularity50$0.79/ serving

Vitamatic, Adenosyl/Hydroxy B12, 90 Capsules

VitamaticClinical87Dose fit78Popularity30$0.21/ serving

PERQUE, Activated B-12 Guard™, 100 Lozenges

PERQUEClinical88Dose fit90Popularity30$0.47/ serving

Pure Encapsulations, Adenosyl/Hydroxy B12, 90 Capsules (2,000 mcg per Capsule)

Pure EncapsulationsClinical86Dose fit67Popularity30$0.31/ serving