Beta-Alanine

Also known as: β-alanine, beta alanine, carnosine precursor

Confidence

research strength

BBuilding confidence66295 studies referenced

Latest evidence update: 2026-05-14

Strongest in Consistency (86). Held back by Recency (17).

Study quality (37%)

Study design (21%)

Risk of bias (16%)

Solid mix of RCTs with some methodological gaps.

Replication (26%)

Cross-study replication (21%)

Precision (5%)

Confirmed across many independent studies with significant findings.

Sample size (16%)

Thousands of participants across the literature.

Consistency (11%)

Studies agree on direction of effect.

Recency (10%)

Mostly pre-2020 research; updates may be needed.

Effect by outcome

how big the change is

Effect-size tagged on 323 of 371 claims for this supplement. Our research updates daily; remaining claims are pending re-processing.

Directional evidence

Areas where research points to a consistent direction of effect. The strength of evidence is graded; the size of the effect is not quantified.

Common dosage

3.2-6.4g/day split across 2-4 doses, daily for 4+ weeks

Description

Carnosine precursor used to buffer muscle pH during high-intensity exercise lasting 1-4 minutes. ISSN position stand confirms benefit for HIIT, CrossFit, combat sports, and middle-distance running. Mechanism is chronic loading — takes 4+ weeks of daily dosing to saturate muscle carnosine; timing relative to workout is irrelevant.

Safety & interactions

Paresthesia (skin tingling) is common and harmless; splitting doses or using sustained-release reduces it. No reported long-term safety concerns at standard doses.

Check interactions with other supplements→

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Order Beta-Alanine

Recommended: 3.2-6.4g/day split across 2-4 doses, daily for 4+ weeks

Protocols featuring Beta-Alanine

Pre-Workout ProtocolBBuilding confidence

Questions about Beta-Alanine

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Referenced studies (295)

ProtocolEngine provides general health information based on published research. This is not medical advice. Consult a healthcare professional before starting any supplement or health protocol.