Myth-buster
A meta-analysis of supplements for competitive swimmers found beta-alanine failed to improve performance — joining caffeine and sodium bicarbonate in the null column, with only creatine showing a statistically significant effect.
This is one of the first indexed meta-analyses on beta-alanine for swimming, so the null result challenges the popular belief that it helps — but the evidence base is still thin, so the picture is contested rather than settled.
Researchers pooled studies on sports supplements in competitive swimmers and found that beta-alanine, along with caffeine and sodium bicarbonate, did not produce a statistically significant improvement in swimming performance (all p > 0.05). Only creatine showed a measurable benefit. Because this is among the first systematic reviews on beta-alanine for this specific outcome, the null finding is noteworthy but not definitive.
Where this fits in the evidence
This is among the first studies we've indexed on Beta-Alanine for Improved Swimming Performance — treat it as an early signal until more research accumulates.
The study
Sport supplementation in competitive swimmers: a systematic review with meta-analysis.
- Meta-Analysis
- 2025-04-09
- Journal of the International Society of Sports Nutrition
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.