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.

Increase fat oxidation

What this outcome means

Fat oxidation is how well your body taps stored fat for fuel, especially during steady exercise and at rest. On DoseRank it maps to a defined health outcome built from human studies on fat-oxidation rates, respiratory exchange ratio, and substrate-use measures – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Endurance athletesRunners and cyclists wanting to draw more fuel from fat.

Metabolic-health focusedPeople tracking how efficiently their body burns stored energy.

Fasted-training fansThose who exercise on an empty stomach to shift fuel use.

Stack buildersAlready taking supplements such as Caffeine Anhydrous or Green Tea Extract and want the dose right.

Evidence level

77Moderate-strong

Caffeine Anhydrous and Green Tea Extract – have moderate public evidence for this outcome. This usually means there are smaller or mechanistic studies, but not randomized human trials. A DoseFit Score of 79 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 available ingredients

Caffeine Anhydrous and Green Tea Extract are the best supported ingredient signals for this outcome.

Dose matchedDoseFit 79

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Caffeine Anhydrous 200 mg vs 200-500 mg, Green Tea Extract 500 mg vs 250-500 mg.

Processed

1.6k

Available

1.6k

Ingredients

Brands

254

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.

Increase fat oxidation

What this outcome means

Who it's for

Endurance athletesRunners and cyclists wanting to draw more fuel from fat.

Metabolic-health focusedPeople tracking how efficiently their body burns stored energy.

Fasted-training fansThose who exercise on an empty stomach to shift fuel use.

Stack buildersAlready taking supplements such as Caffeine Anhydrous or Green Tea Extract and want the dose right.

Evidence level

77Moderate-strong

Best available ingredients

Caffeine Anhydrous and Green Tea Extract are the best supported ingredient signals for this outcome.

Dose matchedDoseFit 79

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Caffeine Anhydrous 200 mg vs 200-500 mg, Green Tea Extract 500 mg vs 250-500 mg.

Processed

1.6k

Available

1.6k

Ingredients

Brands

254

Coverage

100%

Relevant ingredients

Which ingredient types matter for fat oxidationOpen to see which ingredient types matter for fat oxidation

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

Use types to filter ranked products

Alkaloids & Stimulants

231 products

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

Typical: , ,

Antioxidants & Bioactive Compounds

82 products

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

Typical: ,

Botanicals/Herbal Extracts

462 products

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

Typical:

Amino Acids & Derivatives

209 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.

Top decision cards

Best products for fat oxidation

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for fat oxidation

fitcode, CodeShred , 60 Veggie Capsules

fitcode$0.16 / serving4.6 · 969Available now

Also helps with

Alertness

Reaction time

Fatigue

Why this ranks here

Evidence fitCaffeine Anhydrous and Green Tea Extract have moderate human evidence for this outcome.
Dose fit2 of 2 dosed ingredients land in the studied range. Caffeine Anhydrous at 200 mg lands inside the studied 200-500 mg window.
Price / serving$0.16 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

200 mgIn rangeinside the studied 200-500 mg window

500 mgIn rangeinside the studied 250-500 mg window

54 mg

6 mcg

150 mg

10 mg

2 mg

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

CelsiusClinical97Dose fit74Popularity84$0.95/ serving

EVLution Nutrition, Trans4orm®, Energized Weight Loss Support, 120 Capsules

EVLution NutritionClinical95Dose fit70Popularity30$0.36/ serving

ALLMAX, Rapidcuts® Xtreme, Lean Lemon Lime, 8.29 oz (235 g)

ALLMAXClinical98Dose fit78Popularity30$0.51/ serving

Applied Nutrition, Green Tea Fat Burner®, 30 Fast-Acting Liquid Soft-Gels

Applied NutritionClinical93Dose fit63Popularity50$0.60/ serving

Twinlab, Ripped Fuel® Extreme, 60 Capsules

TwinlabClinical96Dose fit70Popularity30$0.66/ serving

Life Extension, Mega Green Tea Extract, Decaffeinated, 100 Vegetarian Capsules (725 mg per Capsule)

Life ExtensionClinical88Dose fit91Popularity91$0.20/ serving

NOW Foods, Green Tea Extract, 400 mg, 100 Veg Capsules

NOW FoodsClinical87Dose fit81Popularity84$0.08/ serving

ABE, Shred-X, Extreme Thermogenic Powder, Lemon Iced Tea, 10.58 oz (300 g)

ABEClinical97Dose fit76Popularity30$1.05/ serving

ABE, Shred-X, Extreme Thermogenic Powder, Sour Gummy Bear, 10.58 oz (300 g)