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

Improve exercise tolerance

DOSERANKEVIDENCE-BASED SUPPLEMENTS

Best Supplements for Exercise tolerance — 460 Ranked | DOSERANK

Top decision cards

Best products for exercise tolerance

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for exercise tolerance

Life Enhancement, PropeL™, 240 Vegetarian Capsules

Life Enhancement$2.18 / serving4.4 · 117Available now

Also helps with

Neuropathy symptoms

Peripheral circulation

Angina symptoms

Why this ranks here

Evidence fitPropionyl-L-Carnitine is the strongest evidence signal for this outcome.
Dose fitPropionyl-L-Carnitine at 2 g lands inside the studied 1-3 g window.
Price / serving$2.18 per serving — high price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustLimited trust signals so far for this listing.

The numbers

2 gIn rangeinside the studied 1-3 g window

2 g

600 mg

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

California Gold Nutrition, CoQ10 with Bioperine® Black Pepper Extract, 360 Veggie Capsules

California Gold NutritionClinical53Dose fit78Popularity91$0.16/ serving

California Gold Nutrition, CoQ10 with Bioperine® and Black Pepper Extract, Enhanced Biovailability, 120 Veggie Capsules

California Gold NutritionClinical53Dose fit78Popularity98$0.18/ serving

Doctor's Best, High Absorption CoQ10, 300 mg, 90 Veggie Softgels

Doctor's BestClinical55Dose fit90Popularity91$0.37/ serving

Doctor's Best, High Absorption CoQ10 , 180 Veggie Caps

Doctor's BestClinical55Dose fit91Popularity84$0.41/ serving

Doctor's Best, High Absorption CoQ10 , 200 mg, 180 Veggie Caps

Doctor's BestClinical53Dose fit78Popularity96$0.23/ serving

Doctor's Best, High Absorption CoQ10 with BioPerine®, 60 Veggie Caps

Doctor's BestClinical55Dose fit91Popularity84$0.49/ serving

California Gold Nutrition, CoQ10, 200 mg, 120 Veggie Softgels

California Gold NutritionClinical53Dose fit78Popularity96$0.27/ serving

NOW Foods, CoQ10, 200 mg, 60 Veg Capsules

NOW FoodsClinical53Dose fit78Popularity99$0.37/ serving

California Gold Nutrition, CoQ10, USP Grade Ubiquinone, 100 mg, 120 Veggie Capsules

California Gold NutritionClinical52Dose fit67Popularity99$0.11/ serving

Top decision cards

Best products for exercise tolerance

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for exercise tolerance

Life Enhancement, PropeL™, 240 Vegetarian Capsules

Life Enhancement$2.18 / serving4.4 · 117Available now

Also helps with

Neuropathy symptoms

Peripheral circulation

Angina symptoms

Why this ranks here

Evidence fitPropionyl-L-Carnitine is the strongest evidence signal for this outcome.
Dose fitPropionyl-L-Carnitine at 2 g lands inside the studied 1-3 g window.
Price / serving$2.18 per serving — high price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustLimited trust signals so far for this listing.

The numbers

2 gIn rangeinside the studied 1-3 g window

2 g

600 mg

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

California Gold Nutrition, CoQ10 with Bioperine® Black Pepper Extract, 360 Veggie Capsules

California Gold NutritionClinical53Dose fit78Popularity91$0.16/ serving

California Gold Nutrition, CoQ10 with Bioperine® and Black Pepper Extract, Enhanced Biovailability, 120 Veggie Capsules

California Gold NutritionClinical53Dose fit78Popularity98$0.18/ serving

Doctor's Best, High Absorption CoQ10, 300 mg, 90 Veggie Softgels

Doctor's BestClinical55Dose fit90Popularity91$0.37/ serving

Doctor's Best, High Absorption CoQ10 , 180 Veggie Caps

Doctor's BestClinical55Dose fit91Popularity84$0.41/ serving

Doctor's Best, High Absorption CoQ10 , 200 mg, 180 Veggie Caps

Doctor's BestClinical53Dose fit78Popularity96$0.23/ serving

Doctor's Best, High Absorption CoQ10 with BioPerine®, 60 Veggie Caps

Doctor's BestClinical55Dose fit91Popularity84$0.49/ serving

California Gold Nutrition, CoQ10, 200 mg, 120 Veggie Softgels

California Gold NutritionClinical53Dose fit78Popularity96$0.27/ serving

NOW Foods, CoQ10, 200 mg, 60 Veg Capsules

NOW FoodsClinical53Dose fit78Popularity99$0.37/ serving

California Gold Nutrition, CoQ10, USP Grade Ubiquinone, 100 mg, 120 Veggie Capsules

California Gold NutritionClinical52Dose fit67Popularity99$0.11/ serving

Improve exercise tolerance

Improve exercise tolerance

Which ingredient types matter for exercise toleranceOpen to see which ingredient types matter for exercise tolerance

Amino Acids & Derivatives

Botanicals/Herbal Extracts

Antioxidants & Bioactive Compounds

Best products for exercise tolerance

Life Enhancement, PropeL™, 240 Vegetarian Capsules

California Gold Nutrition, CoQ10 with Bioperine® Black Pepper Extract, 360 Veggie Capsules

California Gold Nutrition, CoQ10 with Bioperine® and Black Pepper Extract, Enhanced Biovailability, 120 Veggie Capsules

Doctor's Best, High Absorption CoQ10, 300 mg, 90 Veggie Softgels

Doctor's Best, High Absorption CoQ10 , 180 Veggie Caps

Doctor's Best, High Absorption CoQ10 , 200 mg, 180 Veggie Caps

Doctor's Best, High Absorption CoQ10 with BioPerine®, 60 Veggie Caps

California Gold Nutrition, CoQ10, 200 mg, 120 Veggie Softgels

NOW Foods, CoQ10, 200 mg, 60 Veg Capsules

California Gold Nutrition, CoQ10, USP Grade Ubiquinone, 100 mg, 120 Veggie 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

Best products for exercise tolerance

Life Enhancement, PropeL™, 240 Vegetarian Capsules

California Gold Nutrition, CoQ10 with Bioperine® Black Pepper Extract, 360 Veggie Capsules

California Gold Nutrition, CoQ10 with Bioperine® and Black Pepper Extract, Enhanced Biovailability, 120 Veggie Capsules

Doctor's Best, High Absorption CoQ10, 300 mg, 90 Veggie Softgels

Doctor's Best, High Absorption CoQ10 , 180 Veggie Caps

Doctor's Best, High Absorption CoQ10 , 200 mg, 180 Veggie Caps

Doctor's Best, High Absorption CoQ10 with BioPerine®, 60 Veggie Caps

California Gold Nutrition, CoQ10, 200 mg, 120 Veggie Softgels

NOW Foods, CoQ10, 200 mg, 60 Veg Capsules

California Gold Nutrition, CoQ10, USP Grade Ubiquinone, 100 mg, 120 Veggie Capsules

Which ingredient types matter for exercise toleranceOpen to see which ingredient types matter for exercise tolerance

Amino Acids & Derivatives

Botanicals/Herbal Extracts

Antioxidants & Bioactive Compounds

Compare the top 3, side by side