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.

Support healthy platelet function

What this outcome means

Platelet function is how readily the tiny cells in your blood clump together to seal injuries, a balance that keeps you from bleeding too easily or clotting too much. On DoseRank it maps to a defined health outcome built from human studies on platelet aggregation, activation markers, and bleeding-time measures – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Clot-prone tendencyOveractive platelets that raise the chance of unwanted clots.

Easy bruisingBleeding or bruising more readily than feels normal.

Cardiovascular watchManaging heart or vascular risk where clotting balance matters.

Stack buildersAlready taking supplements such as Pine Bark Extract and want the dose right.

Evidence level

78Moderate-strong

Pine Bark Extract – has moderate public evidence for this outcome. This usually means there are smaller or mechanistic studies, but not randomized human trials. A DoseFit Score of 91 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 available ingredients

Pine Bark Extract is the best supported ingredient signal for this outcome.

Dose matchedDoseFit 91

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: Above range: Pine Bark Extract 300 mg vs 100-200 mg.

Processed

235

Available

235

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.

Support healthy platelet function

What this outcome means

Who it's for

Clot-prone tendencyOveractive platelets that raise the chance of unwanted clots.

Easy bruisingBleeding or bruising more readily than feels normal.

Cardiovascular watchManaging heart or vascular risk where clotting balance matters.

Stack buildersAlready taking supplements such as Pine Bark Extract and want the dose right.

Evidence level

78Moderate-strong

Best available ingredients

Pine Bark Extract is the best supported ingredient signal for this outcome.

Dose matchedDoseFit 91

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: Above range: Pine Bark Extract 300 mg vs 100-200 mg.

Processed

235

Available

235

Ingredients

Brands

Coverage

100%

Relevant ingredients

Which ingredient types matter for platelet functionOpen to see which ingredient types matter for platelet function

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

Use types to filter ranked products

Fatty Acids & Lipids

71 products

Dietary fats including omega-3s and structural lipids. Look at the active EPA/DHA amounts and freshness, since oils oxidize and turn rancid.

Typical:

Antioxidants & Bioactive Compounds

5 products

Molecules that neutralize free radicals and tune cell signaling. Helpful in balance; mega-doses can blunt the body's own adaptive defenses.

Typical:

Botanicals/Herbal Extracts

65 products

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

Typical:

Top decision cards

Best products for platelet function

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for platelet function

Nutricost, Pine Bark Extract, 180 Capsules (300 mg per Capsule)

Nutricost$0.07 / serving4.7 · 1,668Available now

Also helps with

Antioxidant capacity

Endothelial function

Asthma control

Why this ranks here

Evidence fitPine Bark Extract has moderate human evidence for this outcome.
Dose fitPine Bark Extract at 300 mg is higher than the studied 100-200 mg window.
Price / serving$0.07 per serving — low 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

300 mgAbove rangehigher than the studied 100-200 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

NOW Foods, Pine Bark Extract, 240 mg, 90 Veg Capsules

NOW FoodsClinical54Dose fit91Popularity80$0.17/ serving

Source Naturals, Pine Bark Extract, 60 Tablets

Source NaturalsClinical54Dose fit91Popularity80$0.25/ serving

EVLution Nutrition, Pine Bark Extract, 90 Veggie Capsules (240 mg per Capsule)

EVLution NutritionClinical54Dose fit91Popularity50$0.07/ serving

ProHealth Longevity, Hydroxytyrosol Extreme™, 25 mg, 90 Capsules

ProHealth LongevityClinical54Dose fit69Popularity68$0.37/ serving

California Gold Nutrition, French Maritime Pine Bark Extract, Oligopin, 100 mg, 60 Veggie Capsules

California Gold NutritionClinical51Dose fit67Popularity91$0.41/ serving

Revive, Kidney, 135 Vegetarian Capsules

ReviveClinical53Dose fit78Popularity76$1.10/ serving

NOW Foods, Pycnogenol® With Amla, 60 Veg Capsules

NOW FoodsClinical51Dose fit67Popularity91$0.95/ serving

NOW Foods, Pycnogenol®, 60 Veg Capsules

NOW FoodsClinical53Dose fit78Popularity68$1.28/ serving

NBI, Nattopine®, 60 Capsules

NBIClinical54Dose fit91Popularity30$1.11/ serving