Improve endothelial function

What this outcome means

Endothelial function is how well the thin lining of your blood vessels widens and adjusts so blood flows smoothly as demands change. On DoseRank it maps to a defined health outcome built from human studies on flow-mediated dilation, vascular reactivity, and arterial stiffness – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Heart-health mindedWatching cardiovascular markers and how freely blood moves through vessels.

Sedentary and desk-boundLong sitting hours that leave circulation sluggish through the day.

Aging vesselsOlder adults noticing arteries feel stiffer and less responsive.

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

Evidence level

87Strong

Pine Bark Extract – has strong public evidence, and Citrus Bioflavonoids adds supporting evidence. DoseRank looks at both evidence quality and formula fit. A DoseFit Score of 73 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

Pine Bark Extract leads this outcome, supported by Citrus Bioflavonoids.

Dose partly matchedDoseFit 73

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Pine Bark Extract 120 mg vs 100-200 mg, Citrus Bioflavonoids 600 mg vs 400-1000 mg.

Processed

7.5k

Available

7.5k

Ingredients

Brands

509

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 endothelial function

What this outcome means

Who it's for

Heart-health mindedWatching cardiovascular markers and how freely blood moves through vessels.

Sedentary and desk-boundLong sitting hours that leave circulation sluggish through the day.

Aging vesselsOlder adults noticing arteries feel stiffer and less responsive.

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

Evidence level

87Strong

Best ingredients

Pine Bark Extract leads this outcome, supported by Citrus Bioflavonoids.

Dose partly matchedDoseFit 73

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Pine Bark Extract 120 mg vs 100-200 mg, Citrus Bioflavonoids 600 mg vs 400-1000 mg.

Processed

7.5k

Available

7.5k

Ingredients

Brands

509

Coverage

100%

Relevant ingredients

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

7.7k products across 5 ingredient types — open to filter the ranking.

Use types to filter ranked products

Botanicals/Herbal Extracts

1.3k products

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

Typical: , , , ...

Antioxidants & Bioactive Compounds

1.5k products

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

Typical: , , , ...

Amino Acids & Derivatives

205 products

The building blocks of protein, taken singly for targeted effects – leucine for muscle, theanine for calm. Free-form versions absorb fast on an empty stomach.

Typical: ,

Fatty Acids & Lipids

17 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:

Vitamins

4.7k 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.

Top decision cards

Best products for endothelial function

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for endothelial function

NOW Foods, Pycnogenol® With Bioflavonoids, 60 Veg Capsules

NOW Foods$0.68 / serving4.7 · 1,939Available now

Why this ranks here

Evidence fitPine Bark Extract leads the evidence here, backed by Citrus Bioflavonoids.
Dose fit2 of 2 dosed ingredients land in the studied range. Pine Bark Extract at 120 mg lands inside the studied 100-200 mg window.
Price / serving$0.68 per serving — high price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustSolid trust signals from buyer ratings, with room to grow.

Trade-offs

Value for money trails the rest of this listDose fit is the weak spot on this list

The numbers

120 mgIn rangeinside the studied 100-200 mg window

600 mgIn rangeinside the studied 400-1000 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products