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2.5/5 Weak evidence

Focus / nootropic evidence brief

Alpha-GPC

Small trials suggest possible acute performance or psychomotor effects, but the evidence base is too thin for a flagship pre-workout recommendation.

Early power/focus signal focus / strength / endurance 5 linked sources Content audit 2026-05-04

Headline Finding

A few small trials report power or psychomotor signals; meta-analysis evidence is mostly cognitive and not gym-specific.

Dose Context

Studies use different acute and short-loading protocols; multi-ingredient formulas make attribution difficult.

Important Caveat

Cognitive-health evidence in impaired populations is not gym focus or power proof in healthy lifters.

Source Drawer

Linked Research

5 papers and evidence links - audit 2026-05-04
  1. Trial Trained cyclists RCT
  2. Full text Trained cyclists full text
  3. Trial Dose/performance trial
  4. Trial Sprint interval trial
  5. Meta-analysis Cognitive RCT meta-analysis

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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