Everything DoseRank tracks on the caffeine shelf — Caffeine Anhydrous and L-Tyrosine. The category itself is never ranked: 105 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 caffeine 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.38 rankedStrong
Perceived exertionSubjective difficulty of physical effort.37 rankedStrong
Strength performanceMaximum or functional force production.37 rankedStrong
AlertnessWakefulness and readiness to respond.39 rankedStrong
Fat oxidationUse of fat as an energy source.61 rankedModerate-strong
Power outputAbility to generate force rapidly.23 rankedStrong
Endurance performanceAbility to maintain effort over a prolonged duration.40 rankedStrong
Attention and concentrationAbility to sustain and direct focus.26 rankedModerate-strong
Ketone levelsCirculating ketone concentrations, relevant in fasting or ketogenic states.5 rankedStrong
Muscle damage biomarkersMarkers such as creatine kinase indicating exercise-related tissue stress.31 rankedStrong
Lean body massNon-fat body mass, often used as a marker of preserved musculature.44 rankedStrong
Muscle strengthAbility of muscles to generate force.16 rankedStrong
Intestinal permeabilityBarrier integrity and leakiness of the gut lining.9 rankedModerate-strong
Calmness or relaxationReduced tension and greater sense of calm.9 rankedStrong
Vitamin B12 statusBiochemical sufficiency of cobalamin.31 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best caffeine supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 105 products against that goal's trials.