amino acid · for low stamina
Beta-Alanine
Builds up a buffer in your muscles that holds off the burn during hard efforts.
Say that in clinical terms
Combines with histidine to form carnosine, an intramuscular pH buffer. Delays acidosis during high-intensity exercise.
How strong is the research?
Strong evidence
Only one study
3 papers read, 1 supporting.
Who was studied: Trained athletes doing hard efforts lasting one to ten minutes.
How much to take
daily
3.2–6.4 g
Loading dose for 4-6 weeks to saturate muscle carnosine. May cause harmless tingling (paresthesia).
Before you take it
- Paresthesia (tingling, flushing, pruritus) is dose-dependent and commonly reported at single doses above ~0.8–1.6 g; it is uncomfortable but not harmful. Minimized by split dosing or sustained-release formulations.
- Beta-alanine competitively inhibits the TauT (SLC6A6) taurine transporter in muscle and other tissues; chronic supplementation reduces muscle taurine content. Animal studies show substantial organ-level taurine depletion (up to 80% cardiac, 67% cerebellar) with sustained TauT inhibition. Human long-term taurine consequences are poorly characterized. Taurine co-supplementation is advisable for use extending beyond a few weeks.
- No NIH/IOM Tolerable Upper Intake Level (UL) has been established for beta-alanine.
- Insufficient safety data for pregnancy and lactation; avoidance is generally advised.
- No clinically significant drug-drug interactions are documented at standard supplemental doses (3.2–6.4 g/day).
What we make of it
The buffering effect only applies to efforts of roughly one to ten minutes.
The detail
The carnosine buffering mechanism is real biochemistry, but it only matters for exercise hard enough to build up acid — roughly one to ten minutes near maximum. It does not address stamina in the everyday sense.