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Performance supplements

Pre-workout and ergogenic aids — caffeine, beta-alanine, and more.

5 supplements in this category

The most effective legal performance booster. Boosts strength, endurance, focus, and pain tolerance — but tolerance builds within weeks.

Dose: 100–300 mg

Buffers muscle acid build-up, extending high-intensity efforts in the 1–4 minute range. The 'tingles' are harmless and fade with use.

Dose: 3.2–6.4 g daily (split doses)

Calming amino acid that supports cardiovascular function and mitigates caffeine jitters. Recent research links it to extended healthspan.

Dose: 1–6 g daily

Betaine Anhydrous

Methyl donor that supports homocysteine recycling and may modestly boost power output. Often paired with creatine in pre-workout formulas.

Dose: 2.5 g daily

L-Carnitine (Tartrate)

Shuttle for fatty acids into mitochondria. Modest fat-burning effects; stronger evidence for recovery and androgen receptor density.

Dose: 1–3 g daily

All 10 comparisons in this category

Caffeine vs Beta-Alanine Caffeine vs Taurine Caffeine vs Betaine Anhydrous Caffeine vs L-Carnitine (Tartrate)Beta-Alanine vs Taurine Beta-Alanine vs Betaine Anhydrous Beta-Alanine vs L-Carnitine (Tartrate)Taurine vs Betaine Anhydrous Taurine vs L-Carnitine (Tartrate)Betaine Anhydrous vs L-Carnitine (Tartrate)