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 hair growth or density

What this outcome means

Hair growth or density is about how much hair you keep and grow across your scalp, reflected in thickness, coverage, and how full your hair looks. On DoseRank it maps to a defined health outcome built from human studies on hair count per area, terminal hair density, and growth rate – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Thinning on topScalp showing more as crown or part-line coverage fades.

Slow-growing hairHair that seems to inch along no matter what you do.

Postpartum regrowthNew parents rebuilding fullness after pregnancy-related shedding settles.

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

Evidence level

60Limited

Evidence score is low, which means that there is not enough data to support the effectiveness of this outcome. However, we will continue to monitor the research and update our recommendations as new information becomes available.

Thin ingredient signal

Saw Palmetto is the best available ingredient signal for this outcome, but the evidence is still thin.

Dose matchedDoseFit 92

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: Above range: Saw Palmetto 540 mg vs 320-320 mg.

Processed

909

Available

909

Ingredients

Brands

163

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 →

Not sure which is right for you?

Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.

Take 60-sec quiz

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 hair growth or density

What this outcome means

Who it's for

Thinning on topScalp showing more as crown or part-line coverage fades.

Slow-growing hairHair that seems to inch along no matter what you do.

Postpartum regrowthNew parents rebuilding fullness after pregnancy-related shedding settles.

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

Evidence level

60Limited

Thin ingredient signal

Saw Palmetto is the best available ingredient signal for this outcome, but the evidence is still thin.

Dose matchedDoseFit 92

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: Above range: Saw Palmetto 540 mg vs 320-320 mg.

Processed

909

Available

909

Ingredients

Brands

163

Coverage

100%

Relevant ingredients

Which ingredient types matter for hair growth or densityOpen to see which ingredient types matter for hair growth or density

348 products across 3 ingredient types — open to filter the ranking.

Use types to filter ranked products

Botanicals/Herbal Extracts

223 products

Concentrated plant and herbal extracts standardized to actives. Potency depends on the extract ratio and marker content, not raw weight.

Typical: ,

Vitamins

95 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:

Proteins & Peptides

30 products

Whole proteins and shorter peptide chains for muscle, recovery and structure. Quality comes down to amino acid profile and digestibility, not grams alone.

Typical:

Top decision cards

Best products for hair growth or density

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for hair growth or density

Swanson Vitamins, Full Spectrum® Saw Palmetto, 540 mg, 250 Vegan Capsules

Swanson Vitamins$0.07 / serving4.7 · 4,258Available now

Also helps with

Urinary tract symptoms

Nocturia

Why this ranks here

Evidence fitEvidence is still thin for Saw Palmetto.
Dose fitSaw Palmetto at 540 mg is higher than the studied 320-320 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.

The numbers

540 mgAbove rangehigher than the studied 320-320 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

NOW Foods, Saw Palmetto Berries, 550 mg, 250 Veg Capsules

NOW FoodsClinical88Dose fit95Popularity91$0.13/ serving

21st Century, Saw Palmetto, 200 Vegetarian Capsules

21st CenturyClinical88Dose fit91Popularity68$0.09/ serving

NOW Foods, Saw Palmetto Extract, 90 Veggie Softgels

NOW FoodsClinical87Dose fit90Popularity99$0.26/ serving

Solaray, True Herbs, Saw Palmetto, 580 mg, 360 VegCaps

SolarayClinical88Dose fit92Popularity50$0.11/ serving

Doctor's Best, Saw Palmetto, Standardized Extract, 320 mg, 180 Softgels

Doctor's BestClinical87Dose fit90Popularity80$0.27/ serving

Nature's Way, Saw Palmetto Berries, 585 mg, 180 Vegan Capsules

Nature's WayClinical88Dose fit92Popularity50$0.10/ serving

Swanson Vitamins, Pumpkin Seed Oil, 1,000 mg, 100 Softgels

Swanson VitaminsClinical84Dose fit90Popularity98$0.15/ serving

NOW Foods, Pumpkin Seed Oil, 1,000 mg, 200 Softgels

NOW FoodsClinical85Dose fit93Popularity98$0.22/ serving

NOW Foods, Pumpkin Seed Oil, 100 Softgels (1,000 mg per Softgel)

NOW FoodsClinical85Dose fit93Popularity99$0.23/ serving