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.

Improve endurance

What this outcome means

Endurance performance is your ability to keep effort going over long stretches without fading, whether running, riding, or training. On DoseRank it maps to a defined health outcome built from human studies on time to exhaustion, aerobic capacity measures like VO2 max, and sustained power output – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Distance athletesRunners and cyclists chasing longer, steadier sustained efforts.

Hitting the wallPeople who fade hard in the back half of long sessions.

Building aerobic baseNewer exercisers extending how long they can keep moving.

Stack buildersAlready taking supplements such as Caffeine Anhydrous or Beta-Alanine and want the dose right.

Evidence level

88Strong

Caffeine Anhydrous, Beta-Alanine, and Citrulline Malate – have strong public evidence. DoseRank looks at both evidence quality and formula fit. A DoseFit Score of 72 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

Caffeine Anhydrous, Beta-Alanine, and Citrulline Malate are the best supported ingredient signals for this outcome.

Dose partly matchedDoseFit 72

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Caffeine Anhydrous 350 mg vs 200-600 mg, Citrulline Malate 6000 mg vs 6000-8000 mg; Below range: Beta-Alanine 2000 mg vs 3200-6400 mg.

Processed

2.5k

Available

2.5k

Ingredients

Brands

321

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.

Improve endurance

What this outcome means

Who it's for

Distance athletesRunners and cyclists chasing longer, steadier sustained efforts.

Hitting the wallPeople who fade hard in the back half of long sessions.

Building aerobic baseNewer exercisers extending how long they can keep moving.

Stack buildersAlready taking supplements such as Caffeine Anhydrous or Beta-Alanine and want the dose right.

Evidence level

88Strong

Best ingredients

Caffeine Anhydrous, Beta-Alanine, and Citrulline Malate are the best supported ingredient signals for this outcome.

Dose partly matchedDoseFit 72

Processed

2.5k

Available

2.5k

Ingredients

Brands

321

Coverage

100%

Relevant ingredients

Which ingredient types matter for endurance performanceOpen to see which ingredient types matter for endurance performance

1.1k products across 4 ingredient types — open to filter the ranking.

Use types to filter ranked products

Alkaloids & Stimulants

229 products

Plant-derived nitrogen compounds like caffeine that stimulate the nervous system. Effective but dose-sensitive, with real tolerance and dependence risk.

Typical:

Botanicals/Herbal Extracts

286 products

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

Typical: , ,

Electrolytes

9 products

Charged minerals – sodium, potassium, magnesium – that drive hydration and nerve signaling. Balance between them matters more than loading any single one.

Typical:

Amino Acids & Derivatives

617 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: , ,

Top decision cards

Best products for endurance performance

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for endurance performance

Animal, Fury® Essentials, Pre Workout, Green Apple, 1.06 lb (483 g)

Animal$1.14 / serving4.7 · 279Available now

Also helps with

Fatigue

Alertness

Perceived exertion

Why this ranks here

Evidence fitCaffeine Anhydrous and Beta-Alanine are the strongest evidence signals for this outcome.
Dose fit2 of 3 dosed ingredients land in the studied range. Caffeine Anhydrous at 350 mg lands inside the studied 200-600 mg window.
Price / serving$1.14 per serving — high price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustMixed trust signals — ratings are positive but the base is limited.

The numbers

350 mgIn rangeinside the studied 200-600 mg window

2000 mgBelow rangebelow the studied 3200-6400 mg window

6000 mgIn rangeinside the studied 6000-8000 mg window

5000 mg

1000 mg

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Animal, Fury®, Essentials, Pre Workout, Watermelon, 1.08 lb (492 g)

AnimalClinical96Dose fit72Popularity30$1.26/ serving

Nutricost, Guarana Powder, 3.5 oz (100 g)

NutricostClinical88Dose fit68Popularity68$0.14/ serving

Animal, Advanced Cuts® Powder, Orange Mango, 9.4 oz (267 g)

AnimalClinical93Dose fit67Popularity50$1.01/ serving

Kaged, Pre-Workout, Pink Lemonade, 1.22 lb (552 g)

KagedClinical95Dose fit72Popularity50$2.02/ serving

Animal, Advanced Cuts® Powder, Blue Ice Pop, 8.2 oz (235.2 g)

AnimalClinical93Dose fit67Popularity50$1.01/ serving

MuscleTech, Hardcore® Elite, 110 Rapid-Release Thermo Caps

MuscleTechClinical88Dose fit70Popularity80$0.49/ serving

EVLution Nutrition, ENGN Shred, Pre-Workout Engine Shred, Cherry Limeade, 8.8 oz (249 g)

EVLution NutritionClinical90Dose fit64Popularity68$0.54/ serving

Nutricost, Performance, PRE-X, Xtreme Pre-Workout Complex, Blue Raspberry, 1.1 lb (498 g)

NutricostClinical93Dose fit72Popularity30$0.75/ serving

Kaged, Pre-Workout, Fruit Punch, 1.21 lb (546 g)

KagedClinical95Dose fit72Popularity30$2.02/ serving