How does DoseRank decide what ranks #1?

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.

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.

DOSERANKEVIDENCE-BASED SUPPLEMENTS

Reduce edema

DOSERANKEVIDENCE-BASED SUPPLEMENTS

Best Supplements for Edema — 1681 Ranked by Evidence | DOSERANK

Top decision cards

Best products for edema

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for edema

Swanson Vitamins, Full Spectrum® Gotu Kola, 435 mg, 60 Capsules

Swanson Vitamins$0.06 / serving4.7 · 1,875Available now

Also helps with

Microcirculation

Wound healing

Why this ranks here

Evidence fitGotu Kola is the strongest evidence signal for this outcome.
Dose fitGotu Kola at 435 mg is higher than the studied 60-180 mg window.
Price / serving$0.06 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

435 mgAbove rangehigher than the studied 60-180 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Nature's Way, Gotu Kola Herb, 180 Vegan Capsules (475 mg per Capsule)

Nature's WayClinical89Dose fit97Popularity89$0.16/ serving

NOW Foods, Gotu Kola, 450 mg, 100 Veg Capsules

NOW FoodsClinical89Dose fit97Popularity76$0.14/ serving

Swanson Vitamins, Gotu Kola Extract, Standardized, 100 mg, 120 Capsules

Swanson VitaminsClinical89Dose fit94Popularity68$0.07/ serving

Nutricost, Grape Seed Extract, 240 Capsules (400 mg per Capsule)

NutricostClinical86Dose fit91Popularity84$0.07/ serving

Nature's Answer, Gotu Kola, 90 Vegetarian Capsules (475 mg per Capsule)

Nature's AnswerClinical89Dose fit97Popularity50$0.22/ serving

Solaray, True Herbs, Gotu Kola, 450 mg, 100 VegCaps

SolarayClinical89Dose fit94Popularity50$0.09/ serving

NOW Foods, Grape Seed, 90 Veg Capsules

NOW FoodsClinical85Dose fit82Popularity80$0.19/ serving

NOW Foods, Grape Seed Extract, 500 mg, 90 Veg Capsules

NOW FoodsClinical86Dose fit92Popularity84$0.26/ serving

NOW Foods, Energy, 90 Veg Capsules

NOW FoodsClinical87Dose fit74Popularity80$0.36/ serving

Top decision cards

Best products for edema

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for edema

Swanson Vitamins, Full Spectrum® Gotu Kola, 435 mg, 60 Capsules

Swanson Vitamins$0.06 / serving4.7 · 1,875Available now

Also helps with

Microcirculation

Wound healing

Why this ranks here

Evidence fitGotu Kola is the strongest evidence signal for this outcome.
Dose fitGotu Kola at 435 mg is higher than the studied 60-180 mg window.
Price / serving$0.06 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

435 mgAbove rangehigher than the studied 60-180 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Nature's Way, Gotu Kola Herb, 180 Vegan Capsules (475 mg per Capsule)

Nature's WayClinical89Dose fit97Popularity89$0.16/ serving

NOW Foods, Gotu Kola, 450 mg, 100 Veg Capsules

NOW FoodsClinical89Dose fit97Popularity76$0.14/ serving

Swanson Vitamins, Gotu Kola Extract, Standardized, 100 mg, 120 Capsules

Swanson VitaminsClinical89Dose fit94Popularity68$0.07/ serving

Nutricost, Grape Seed Extract, 240 Capsules (400 mg per Capsule)

NutricostClinical86Dose fit91Popularity84$0.07/ serving

Nature's Answer, Gotu Kola, 90 Vegetarian Capsules (475 mg per Capsule)

Nature's AnswerClinical89Dose fit97Popularity50$0.22/ serving

Solaray, True Herbs, Gotu Kola, 450 mg, 100 VegCaps

SolarayClinical89Dose fit94Popularity50$0.09/ serving

NOW Foods, Grape Seed, 90 Veg Capsules

NOW FoodsClinical85Dose fit82Popularity80$0.19/ serving

NOW Foods, Grape Seed Extract, 500 mg, 90 Veg Capsules

NOW FoodsClinical86Dose fit92Popularity84$0.26/ serving

NOW Foods, Energy, 90 Veg Capsules

NOW FoodsClinical87Dose fit74Popularity80$0.36/ serving

Reduce edema

Reduce edema

Which ingredient types matter for edemaOpen to see which ingredient types matter for edema

Botanicals/Herbal Extracts

Antioxidants & Bioactive Compounds

Best products for edema

Swanson Vitamins, Full Spectrum® Gotu Kola, 435 mg, 60 Capsules

Nature's Way, Gotu Kola Herb, 180 Vegan Capsules (475 mg per Capsule)

NOW Foods, Gotu Kola, 450 mg, 100 Veg Capsules

Swanson Vitamins, Gotu Kola Extract, Standardized, 100 mg, 120 Capsules

Nutricost, Grape Seed Extract, 240 Capsules (400 mg per Capsule)

Nature's Answer, Gotu Kola, 90 Vegetarian Capsules (475 mg per Capsule)

Solaray, True Herbs, Gotu Kola, 450 mg, 100 VegCaps

NOW Foods, Grape Seed, 90 Veg Capsules

NOW Foods, Grape Seed Extract, 500 mg, 90 Veg Capsules

NOW Foods, Energy, 90 Veg Capsules

What every metric means

Compare the top 3, side by side

Not sure which is right for you?

Get a personal report

Frequently asked

Which ingredient types matter for edemaOpen to see which ingredient types matter for edema

Botanicals/Herbal Extracts

Antioxidants & Bioactive Compounds

Compare the top 3, side by side

Best products for edema

Swanson Vitamins, Full Spectrum® Gotu Kola, 435 mg, 60 Capsules

Nature's Way, Gotu Kola Herb, 180 Vegan Capsules (475 mg per Capsule)

NOW Foods, Gotu Kola, 450 mg, 100 Veg Capsules

Swanson Vitamins, Gotu Kola Extract, Standardized, 100 mg, 120 Capsules

Nutricost, Grape Seed Extract, 240 Capsules (400 mg per Capsule)

Nature's Answer, Gotu Kola, 90 Vegetarian Capsules (475 mg per Capsule)

Solaray, True Herbs, Gotu Kola, 450 mg, 100 VegCaps

NOW Foods, Grape Seed, 90 Veg Capsules

NOW Foods, Grape Seed Extract, 500 mg, 90 Veg Capsules

NOW Foods, Energy, 90 Veg Capsules

Reduce edema

Reduce edema

Which ingredient types matter for edemaOpen to see which ingredient types matter for edema

Botanicals/Herbal Extracts

Antioxidants & Bioactive Compounds

Best products for edema

Swanson Vitamins, Full Spectrum® Gotu Kola, 435 mg, 60 Capsules

Nature's Way, Gotu Kola Herb, 180 Vegan Capsules (475 mg per Capsule)

NOW Foods, Gotu Kola, 450 mg, 100 Veg Capsules

Swanson Vitamins, Gotu Kola Extract, Standardized, 100 mg, 120 Capsules

Nutricost, Grape Seed Extract, 240 Capsules (400 mg per Capsule)

Nature's Answer, Gotu Kola, 90 Vegetarian Capsules (475 mg per Capsule)

Solaray, True Herbs, Gotu Kola, 450 mg, 100 VegCaps

NOW Foods, Grape Seed, 90 Veg Capsules

NOW Foods, Grape Seed Extract, 500 mg, 90 Veg Capsules

NOW Foods, Energy, 90 Veg Capsules

What every metric means

Compare the top 3, side by side

Not sure which is right for you?

Get a personal report

Frequently asked

Related outcomes

Related outcomes

Which ingredient types matter for edemaOpen to see which ingredient types matter for edema

Botanicals/Herbal Extracts

Antioxidants & Bioactive Compounds

Compare the top 3, side by side

Best products for edema

Swanson Vitamins, Full Spectrum® Gotu Kola, 435 mg, 60 Capsules

Nature's Way, Gotu Kola Herb, 180 Vegan Capsules (475 mg per Capsule)

NOW Foods, Gotu Kola, 450 mg, 100 Veg Capsules

Swanson Vitamins, Gotu Kola Extract, Standardized, 100 mg, 120 Capsules

Nutricost, Grape Seed Extract, 240 Capsules (400 mg per Capsule)

Nature's Answer, Gotu Kola, 90 Vegetarian Capsules (475 mg per Capsule)

Solaray, True Herbs, Gotu Kola, 450 mg, 100 VegCaps

NOW Foods, Grape Seed, 90 Veg Capsules

NOW Foods, Grape Seed Extract, 500 mg, 90 Veg Capsules

NOW Foods, Energy, 90 Veg Capsules