Best For

Best Performance for Energy & Fatigue

Only three performance-category products are graded for energy and fatigue, and they address it through different mechanisms. Electrolyte blends have the most direct evidence, targeting a narrow, real cause of exercise fatigue — dehydration and sodium loss — rather than general tiredness. Creatine's energy-related benefits are better documented under sleep deprivation or physical exertion than as an everyday pick-me-up. Cordyceps carries the thinnest evidence of the three, resting on smaller and more mechanistic studies of cellular energy production. None of these substitute for sleep, which remains the dominant lever for fatigue that a supplement can't replace.

4 products · sorted by evidence grade

Creatine Monohydrate

A

The most-studied sports supplement in history — strong evidence for strength and power, emerging evidence for cognitive benefits.

Muscle & Athletic PerformanceBrain & CognitiveEnergy & Fatigue

Electrolyte Blend

A

Sodium, potassium, and magnesium for hydration and performance — replacing what you lose in sweat during prolonged exercise is settled, uncontroversial science.

Muscle & Athletic PerformanceEnergy & Fatigue

Cordyceps

C

A medicinal mushroom with promising but preliminary evidence for improving oxygen utilization and endurance — most human trials are small and short.

Energy & FatigueMuscle & Athletic Performance

Exogenous Ketones (Ketone-IQ)

C

Your blood ketones will go up. A meta-analysis of 8 trials found endurance performance doesn't follow, and two trials found it got worse.

Muscle & Athletic PerformanceEnergy & FatigueBrain & Cognitive
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Medical disclaimer. The information on this site is provided for educational purposes only and is not intended as medical advice. It does not constitute a diagnosis, treatment plan, or recommendation for any specific health condition. Always consult a qualified healthcare professional before making changes to your supplement regimen, diet, or lifestyle — especially if you are pregnant, nursing, taking medications, or managing a medical condition.

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