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Nutrition

Ergogenic Aids Evidence Tiers

Ergogenic aids evidence tiers separate well-studied aids like creatine and caffeine from weak proprietary blends—training fundamentals still come first.

Ergogenic aids evidence tiers rank supplements by research strength—strong (creatine, caffeine, beta-alanine for specific tasks), moderate (beet nitrates, bicarbonate for some events), weak or marketing-heavy (most proprietary blends). Tier A means multiple randomized trials in trained people; tier C means anecdotes and influencer claims.

Sleep, calories, and program quality outrank any tier.

Common questions

  • Which ergogenic aids have the strongest evidence?

    Creatine monohydrate, caffeine for many sports, and beta-alanine for high-acid efforts have the deepest trial base. Beet nitrates and sodium bicarbonate help some events with more individual response.

Related guide

Creatine Monohydrate Starter Guide: Dosing, Timing, Hydration, and Myths →

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