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2.5/5 Weak evidence

Focus / nootropic evidence brief

Paraxanthine

Early human studies suggest possible cognitive or sport-performance effects, but the evidence is young, product-specific, and far below caffeine's certainty.

Emerging stimulant focus / endurance 6 linked sources Content audit 2026-05-04

Headline Finding

Early RCTs report cognition, rowing, and energy-expenditure signals; independent sport replication remains limited.

Dose Context

Trials commonly use 100-300 mg acute dosing; comparisons with caffeine and sleep effects are still being mapped.

Important Caveat

Independent sport trials and longer safety follow-up are still needed before this looks like a dependable caffeine alternative.

Source Drawer

Linked Research

6 papers and evidence links - audit 2026-05-04
  1. Trial Cognition dose-response RCT
  2. Trial Energy expenditure RCT
  3. Trial Rowing crossover RCT
  4. Trial Post-run cognition trial
  5. Safety Safety comparison
  6. Trial Caffeine metabolism trial

How To Read This Rating

The score reflects evidence that the supplement does its stated job. Some jobs are direct, such as strength, endurance, or recovery; others are indirect, such as sleep, mood, appetite, or health support. A real effect can still receive a cautious practical rating when dose, safety, product quality, or audience fit remain uncertain.

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