Beta-alanine raises the main muscle acid buffer and modestly improves hard-effort capacity for about one to ten minutes after several grams daily for weeks. Endurance and thinking-score signals in older adults are weaker; blood-sugar effects are small. Temporary tingling eases with split or slow-release dosing. An add-on for hard-effort capacity, not a lifespan drug. (Full Review)
| Marker | Target | Why |
|---|---|---|
| Fasting glucose | ~70–90 mg/dL | Optional context if metabolic benefits are a goal |
| HbA1c | ~4.8–5.3% functional aim | Longer-term glycemic exposure |
| ALT / AST | Within lab reference | Optional if liver disease history or multiple medications |
| eGFR | ≥90 mL/min/1.73 m² preferred | General kidney context for supplement users |
Cadence: Baseline optional in healthy users; qualitative each training week; optional labs at 8–12 weeks if tracking metabolic outcomes, then as indicated