Supplement
Beta-Alanine
The tingling amino acid with meta-analytic backing for hard efforts.
Beta-alanine is an amino acid that raises muscle carnosine, the main intracellular buffer against the acid buildup of hard exercise. We grade Beta-Alanine B+ on evidence and A- for worth-it at about $8-12 per month.
Evidence
Worth it
Typical cost: $8-12/month
What it does
Beta-alanine is an amino acid that raises muscle carnosine, the main intracellular buffer against the acid buildup of hard exercise. More carnosine means muscles resist fatigue longer during intense efforts.
What the research says
Improves high-intensity exercise performance, especially efforts lasting 30 seconds to 10 minutes
Evidence: strong. Meta-analyses (Hobson et al. 2012; Saunders et al. 2017, published in BJSM) show consistent ergogenic effects in the 0.5 to 10 minute range where anaerobic glycolysis dominates. https://bjsm.bmj.com/content/51/8/658
Increases muscle carnosine by 40 to 80 percent with loading
Evidence: strong. Chronic dosing of 3.2 to 6.4 g/day for 4 to 12 weeks reliably raises carnosine (Harris et al. 2006 and replications).
May help exercise capacity in older adults
Evidence: emerging. A 2024 systematic review of 5 trials (163 adults, mean age 69) found possible exercise capacity improvement at 2.4 to 3.2 g/day; strength did not improve.
DRAFT: multiple meta-analyses support a real, specific performance effect; graded below A because benefits are narrow (high-intensity efforts only) and there are no longevity or healthspan outcomes.
Is it worth it?
DRAFT: one of the cheapest proven performance aids; a few dollars a month for a meta-analytic effect in its lane.
Typical cost
$8-12/month
Common form, not a brand recommendation
Dosage contextestablished
3.2 to 6.4 g per day in split doses for 4 to 12 weeks to load; about 1.2 g per day maintains elevated carnosine.
Safety notes
The main side effect is paresthesia, harmless skin tingling from large single doses; split doses under 1.6 g or sustained-release formulas avoid it. The ISSN position stand considers it safe at recommended doses in healthy people; data beyond 24 weeks is thin. Talk to your doctor before supplementing. This page is information, not medical advice.
Longevity Lab Report
Beta-Alanine news, graded when it happens.
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Changelog
Last updated 2026-10-15
- 2026-10-15|Entry added as DRAFT for the worth-it leaderboard expansion.