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3/5 Moderate evidence

Performance evidence brief

Blackcurrant extract

New Zealand blackcurrant extract has a plausible endurance and recovery signal, but trial results vary by sport, dose, and baseline performance.

Promising but variable endurance / recovery 6 linked sources Content audit 2026-05-04

Headline Finding

NZ blackcurrant meta-analysis: performance effect 0.45 (95% CI 0.09-0.81; p=0.01), small but significant.

Dose Context

Studies commonly use anthocyanin-rich extract for about 7 days, but acute, multi-week, and recovery protocols differ.

Important Caveat

Product anthocyanin content and the target use case need to match the research closely.

Source Drawer

Linked Research

6 papers and evidence links - audit 2026-05-04
  1. Meta-analysis Sport performance meta-analysis
  2. Trial Cycling time-trial RCT
  3. Trial Rock climber RCT
  4. Trial Recovery RCT full text
  5. Trial Trained cyclist null RCT
  6. Trial Rowing performance RCT

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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