Everything DoseRank tracks on the fat burners shelf — Caffeine Anhydrous and L-Tyrosine. The category itself is never ranked: 256 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
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.
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
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. 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.
Start with a goal, not a brand
Browsing fat burners supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Reaction timeSpeed of physical or cognitive response to a stimulus.122 rankedStrong
Perceived exertionSubjective difficulty of physical effort.113 rankedStrong
Strength performanceMaximum or functional force production.114 rankedStrong
Activities of daily livingCapacity to complete routine self-care activities independently.35 rankedStrong
AlertnessWakefulness and readiness to respond.126 rankedStrong
Fat oxidationUse of fat as an energy source.189 rankedModerate-strong
AppetiteDesire to eat; may be clinically favorable or unfavorable depending on context.139 rankedModerate-strong
Endurance performanceAbility to maintain effort over a prolonged duration.136 rankedStrong
Attention and concentrationAbility to sustain and direct focus.94 rankedModerate-strong
Peripheral circulationBlood flow to limbs and peripheral tissues.41 rankedModerate-strong
Stress resilienceAbility to cope with or recover from stress.68 rankedModerate-strong
Calmness or relaxationReduced tension and greater sense of calm.37 rankedStrong
Resting heart rateBaseline heart rate measured at rest.99 rankedStrong
Intestinal permeabilityBarrier integrity and leakiness of the gut lining.31 rankedModerate-strong
Aspartate aminotransferase (AST)Enzyme used to assess liver and muscle injury.26 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best fat burners supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 256 products against that goal's trials.