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 strength performance

What this outcome means

Strength performance is how much force your muscles can produce, whether in a single all-out effort or sustained through a working set. On DoseRank it maps to a defined health outcome built from human studies on one-rep max, peak force output, and functional lifting capacity – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Lifters chasing PRsPushing for heavier loads on squat, bench, and deadlift.

Plateaued traineesStuck at the same weights despite consistent gym work.

Functional-strength seekersWanting everyday lifting and carrying to feel easier.

Stack buildersAlready taking supplements such as Caffeine Anhydrous and want the dose right.

Evidence level

92Strong

Caffeine Anhydrous – has strong public evidence. DoseRank looks at both evidence quality and formula fit. A DoseFit Score of 67 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 is the best supported ingredient signal for this outcome.

Dose partly matchedDoseFit 67

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Caffeine Anhydrous 300 mg vs 300-600 mg.

Processed

325

Available

325

Ingredients

Brands

113

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 strength performance

What this outcome means

Who it's for

Lifters chasing PRsPushing for heavier loads on squat, bench, and deadlift.

Plateaued traineesStuck at the same weights despite consistent gym work.

Functional-strength seekersWanting everyday lifting and carrying to feel easier.

Stack buildersAlready taking supplements such as Caffeine Anhydrous and want the dose right.

Evidence level

92Strong

Best ingredients

Caffeine Anhydrous is the best supported ingredient signal for this outcome.

Dose partly matchedDoseFit 67

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Caffeine Anhydrous 300 mg vs 300-600 mg.

Processed

325

Available

325

Ingredients

Brands

113

Coverage

100%

Relevant ingredients

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

229 products across 1 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:

Top decision cards

Best products for strength performance

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for strength performance

Nutrex Research, LIPO-6, Hardcore, Maximum Strength, 60 Capsules

Nutrex Research$0.45 / serving4.5 · 585Available now

Also helps with

Alertness

Reaction time

Perceived exertion

Why this ranks here

Evidence fitCaffeine Anhydrous is the strongest evidence signal for this outcome.
Dose fitCaffeine Anhydrous at 300 mg lands inside the studied 300-600 mg window.
Price / serving$0.45 per serving — mid 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

300 mgIn rangeinside the studied 300-600 mg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Celsius, Live Fit, Berry, 14 On-The-Go Packets, 0.18 oz (5.11 g) Each

CelsiusClinical84Dose fit67Popularity84$0.95/ serving

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

NutricostClinical84Dose fit67Popularity30$0.75/ serving

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

AnimalClinical85Dose fit71Popularity30$1.14/ serving

ProSupps, Hyde Xtreme®, Hard-Hitting Energy Pre Workout, Watermelon, 7.4 oz (210 g)

ProSuppsClinical84Dose fit67Popularity30$1.02/ serving

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

AnimalClinical85Dose fit71Popularity30$1.26/ serving

MuscleTech, Hydroxycut® Hardcore Elite, 100 Capsules

MuscleTechClinical73Dose fit44Popularity50$0.52/ serving

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

KagedClinical75Dose fit46Popularity50$2.02/ serving

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

KagedClinical75Dose fit46Popularity30$2.02/ serving

Kaged, Pre-Workout, Berry Blast, 1.25 lb (570 g)