Energy & Fatigue

A group of eight essential B vitamins that play well-established roles in energy metabolism and neurological function — deficiency is common in certain populations.

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

Sodium, potassium, and magnesium for hydration and performance — the science behind electrolyte replacement during exercise is well-established and uncontroversial.

A foundational mineral most people under-consume — strong for correcting inadequacy, modest (not magical) for sleep.

The sunshine vitamin most indoor-dwellers are low in — strong evidence for bone health and immune function, reasonable for energy.

An adaptogen with real RCT data for stress and cortisol reduction — not Grade A because trial sizes are small and long-term data is limited.

An essential trace mineral required for energy production, connective tissue formation, and iron metabolism — rarely needed as a standalone supplement unless zinc supplementation depletes it.

A mitochondrial coenzyme critical for cellular energy production, with good evidence for heart health support and addressing statin-related depletion.

An essential trace mineral required for thyroid hormone production — deficiency causes hypothyroidism and is common in regions without iodized salt, but excess can also disrupt thyroid function.

An amino acid precursor to dopamine and norepinephrine with good evidence for preserving cognitive performance under acute stress — less clear benefit under normal conditions.

An adaptogenic herb with solid RCT evidence for reducing mental fatigue and improving stress resilience, particularly under demanding conditions.

A conditionally essential amino acid with solid evidence for cardiovascular protection and emerging longevity interest, though human lifespan data is still absent.

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

Animal data on NAD+ restoration is genuinely exciting, but human longevity evidence remains thin — this is a hype check candidate.

Pyrroloquinoline quinone shows mitochondrial support in cell and animal studies, but human evidence is limited to small pilot trials with modest results.

A Southeast Asian herb with emerging but limited human evidence for testosterone support, stress reduction, and physical performance.