Benefits

Why does copper make me feel better?

Last reviewed: May 2026

The short answer

Copper is required for cytochrome c oxidase, the enzyme that carries out the final step of mitochondrial ATP production — this is the biochemical basis for the fatigue seen in copper deficiency. If your copper status was genuinely low, correcting it can meaningfully improve energy. It isn't a general stimulant, though: the effect is tied to reversing an actual shortfall, not a boost on top of adequate levels.

The energy mechanism

Your cells generate usable energy (ATP) through the mitochondrial electron transport chain. The final step of that chain is carried out by cytochrome c oxidase, which cannot function without copper. When copper is low, that step is impaired, ATP production drops, and exertional fatigue is a common result. Restoring copper restores the enzyme's activity.

The iron connection

Copper also supports energy indirectly through iron. Ceruloplasmin, a copper-dependent enzyme, is needed to mobilize iron for red blood cell production. Copper deficiency can therefore cause a functional anemia that does not respond to iron supplementation — another route to fatigue that copper can correct.

Why it isn't a stimulant

If your copper levels are already adequate, adding more will not produce an energy "boost." The improvement people notice is the reversal of a deficiency, not a pharmacological effect. If you feel persistently fatigued and are not deficient in copper, it is worth investigating other causes with a clinician.

Sources

NIH Office of Dietary Supplements — Copper Fact Sheet for Health Professionals — ods.od.nih.gov