howtosupplement
Performance

Beta-Alanine

Amino acid that raises muscle carnosine and modestly improves anaerobic performance in adults doing HIIT or repeated sprints.

Beta-Alanine

Beta-Alanine

66
score
A
evidence
Safe
risk
Quick Take

Useful for HIIT, rowing, cycling, or repeated hard sets — otherwise low return for general wellness.

Beta-alanine is a nonessential amino acid found in animal foods mainly as part of carnosine and anserine. Supplementing raises muscle carnosine, which helps buffer acid during hard exercise. Best-supported benefits are modest improvements in anaerobic performance, fatigue resistance, and repeated-bout training volume. It helps most people doing HIIT, rowing, cycling, combat sports, or hard resistance training.

Proven Benefits

01
Improves anaerobic performance
02
Improves training volume
03
Delays fatigue during hard efforts
04
May improve repeated-sprint output
05
May improve work capacity

Protocol

Amount
3.2-6.4 g
Frequency
Daily, split into 2-4 doses
When
Any time of day — consistency matters more than timing; split doses or use sustained-release to reduce tingling.

Onset Time

2-4 weeks for noticeable training effects; 8-12 weeks for fuller benefit

Who Should Consider

Adults doing HIIT or bootcamp-style classes
People who train with repeated hard intervals
Gym-goers doing high-rep or short-rest circuits
Recreational cyclists, rowers, and runners
Vegans or vegetarians doing intense training
Active older adults in supervised training

Food Sources

  • Chicken and turkey (carnosine/anserine source; amounts vary widely)
  • Beef and pork (carnosine source; amounts vary widely)
  • Fish such as tuna (carnosine/anserine source; amounts vary widely)

How It Works

Beta-alanine is the rate-limiting precursor for muscle carnosine. Higher carnosine helps buffer hydrogen ions that accumulate during hard exercise, so muscles resist the drop in pH and can sustain intense work a bit longer.

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