Beta-Alanine and Reduced Body Mass

Research synthesisLow evidenceSmall effect3 studies · 0 beneficial · 3 neutral · 0 harmful

Across 3 studies, beta-alanine supplementation shows no effect on reduced body mass, with all studies reporting neutral, small-sized effects. The most robust evidence, a meta-analysis of 20 randomized controlled trials (492 participants), found no significant change in body mass (WMD: -0.15 kg; 95% CI: -0.78 to 0.47). The median study duration was 28 days, but effects are unlikely even with longer use based on current data.

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. None of the included studies reached statistical significance, and all reported neutral effects, suggesting that any observed changes are likely negligible.

Generated Jun 11, 2026

Doses used in studies

g/day: 6.4 (median 6.4, IQR 6.4–6.4) — 1 study

Time to effect

Median: 4 weeks · IQR 4 weeks–4 weeks · Range 4 weeks–4 weeks — Reported in 1 of 3 studies

3 of 3 papersPopulation:

Effects of beta-alanine supplementation on body composition: a GRADE-assessed systematic review and meta-analysis.
- 2022-05-31
- Meta-Analysis · n = 492
- Journal of the International Society of Sports Nutrition 19(1)
- - Damoon Ashtary-Larky
  - Reza Bagheri
  - Matin Ghanavati
  - Omid Asbaghi
  - Alexei Wong
  - Jeffrey R Stout
  - Katsuhiko Suzuki
- PubMed: 35813845
- DOI: 10.1080/15502783.2022.2079384
4 Insights on
- Reduced Body Mass
- High evidence
Pooled effect size from 20 studies indicated that beta-alanine supplementation has no effect on body mass (WMD: -0.15 kg; 95% CI: -0.78 to 0.47; p = 0.631, I² = 0.0%, p = 0.998)
Effect
Neutral
Effect size
Small
Significant
No
Effects of Combined Versus Isolated Beta-Alanine and Sodium Bicarbonate Supplementation on Physical Capacity in Highly Trained Female Basketball Players: A Randomized Controlled Trial.
- 2026-06-01
- RCT
- International journal of sports physiology and performance 21(6)
- - Jakub Adamczewski
  - Mikołaj Szymocha
  - Natalia Główka
  - Jacek Adrian
  - Krzysztof Durkalec-Michalski
- PubMed: 41838453
- DOI: 10.1123/ijspp.2025-0447
6 Insights on
- Reduced Body Mass
- High evidence
- Athletes
no changes in ratings of perceived exertion, body mass, and composition were observed.
Effect
Neutral
Effect size
Small
Significant
No
Dose
6.4 g·d-1
Effects of Different Dietary Supplements on Swimming Performance: A Systematic Review and Network Meta-Analysis.
- 2024-12-26
- Systematic Review
- Nutrients 17(1)
- - Dongxiang Huang
  - Xiaobing Wang
  - Hideki Takagi
  - Shiwei Mo
  - Zhongzheng Wang
  - Daniel Hung-Kay Chow
  - Bo Huang
- PubMed: 39796467
- DOI: 10.3390/nu17010033
4 Insights on
- Reduced Body Mass
- High evidence
- Rigorous Journal
No prominent differences were noted among the interventions in 50 m time, 200 m time, heart rate, and body mass.
Effect
Neutral
Effect size
Small
Significant
No

Beta-Alanine and Reduced Body Mass

Effects of beta-alanine supplementation on body composition: a GRADE-assessed systematic review and meta-analysis.

Effects of Combined Versus Isolated Beta-Alanine and Sodium Bicarbonate Supplementation on Physical Capacity in Highly Trained Female Basketball Players: A Randomized Controlled Trial.

Effects of Different Dietary Supplements on Swimming Performance: A Systematic Review and Network Meta-Analysis.