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Evidence-Based Supplement Research

Evidence-Based Supplement Research

Guarana and Improved Memory Function

Doses used in studies

g/day: 2 (median 2, IQR 2–2) — 1 study

Time to effect

Median: 10 days · IQR 10 days–10 days · Range 10 days–10 days — Reported in 1 of 1 study

1 of 1 paper

Effects of Guarana and Green Tea Consumption on Students' Intellectual Performances.
- 2025-03-12
- Clinical Trial
- Nutrients 17(6)
- - Valentina Amaritei
  - Petronela-Elena Buruiana
  - Roxana Filip
  - Florin Filip
  - Ancuta Veronica Lupaescu
  - Monica Iavorschi
  - Roxana-Elena Gheorghita
- PubMed: 40290036
- DOI: 10.3390/nu17061000
1 Insight on
- Improved Memory Function
- High evidence
- Rigorous Journal
The results showed that both guarana and green tea fostered significant improvements in cognitive performance.
Effect
Beneficial
Effect size
Moderate
Significant
Yes
Dose
2 g guarana per day