Amino Acid
Beta-Alanine
An amino acid commonly used for physical endurance, with emerging cognitive benefits under fatigue.
KÖGN Health grades Beta-Alanine as C+ (Limited evidence) and rates it 3.5 out of 5.
Last reviewed · June 2026
Primary effects
- Improved endurance
- Reduced fatigue
- Potential cognitive support
How it works
Increases carnosine levels, helping buffer fatigue during prolonged exertion.
Overview
Beta-Alanine is primarily known for its role in physical performance, particularly in buffering lactic acid during high-intensity exercise. Its cognitive benefits are indirect, mainly through improved endurance and reduced fatigue in demanding conditions. Some users report enhanced mental resilience during prolonged tasks. A common side effect is a harmless tingling sensation (paresthesia).
The evidence
Beta-alanine is best known as an exercise supplement: it builds muscle carnosine and buffers fatigue. A cognitive angle is emerging — a randomised trial in older adults found it improved cognition in those starting below normal, and other work links it to brain changes — but the evidence is early and strongest in ageing or post-exercise contexts rather than healthy enhancement.
How to dose it
Studies use roughly 2–5 g/day, usually split to limit the characteristic tingling; benefits build as muscle carnosine rises over weeks.
When to take it
Chronic.
Safety & side effects
Very well tolerated; the main effect is harmless skin tingling ('paraesthesia'), reduced by splitting the dose or using sustained-release forms.
Who should avoid it
Few known issues for healthy adults. Discuss with a clinician if you are pregnant; the cognitive evidence is preliminary and mostly in older or exercising people.
References
Related ingredients
Graded entries that target the same cognitive goals.
Categories
Draft — the dose, safety and evidence notes on this entry were prepared from the published literature and are pending editorial and clinical review.
Educational information, not medical advice. The evidence grade is KÖGN’s editorial assessment of published research, not a health claim. Speak to a qualified clinician before changing what you take.