Beta-Alanine and Reduced Body Mass

Research synthesisVery low evidenceSmall effect3 studies · 0 beneficial · 3 neutral · 0 harmful

Across all 3 studies (1 meta-analysis, 1 RCT, 1 systematic review), beta-alanine supplementation showed no beneficial effect on body mass, with a small neutral effect size. The most-studied dose (6.4 g/day) and population (athletes) were examined in only one trial; median study duration was 28 days. The evidence consistently indicates no impact on body mass.

Studied populations: athletes

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Many of the included studies did not reach statistical significance — effect may be smaller than the predominant direction suggests. All studies reported neutral findings, indicating that beta-alanine does not reduce body mass under the conditions tested.

Generated Jul 12, 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.