Two separately EU-reviewed claims about copper and magnesium — with exact wording, background and sources, each considered on its own.
Go to the GuideBoth trace elements are linked to normal energy-yielding metabolism — each through its own claim, assessed individually by EFSA and authorized separately by the European Commission. Neither wording describes a combined effect of the two minerals.
Part of the body's copper sits locked inside an enzyme that hands electrons off to oxygen at the tail end of a long reaction sequence. That's the exact point the claim below addresses.
Without a bound magnesium ion, the enzyme that closes the final phosphate bond of a new ATP molecule stalls. The claim below sums up this documented connection.
Specialists use the term energy-yielding metabolism for the entire chain of reactions that steadily turns food-derived building blocks into ATP, the molecule nearly all other cellular work draws on. The final and most productive steps of that chain take place inside one particular cell structure: the mitochondria.
At the tail end of the mitochondrial electron transport chain sits an enzyme called cytochrome c oxidase. It picks up electrons from an upstream carrier protein and hands them over to oxygen molecules, which combine to form water. That final handover indirectly drives ATP production. Two copper centers inside the enzyme's active region are a fixed part of this step — remove them, and the transfer all but stops.
Copper contributes to normal energy-yielding metabolism. EU-authorized wording · Regulation (EU) No 432/2012.
A short distance away in the same membrane, a second enzyme is at work: ATP synthase. It uses a flow of hydrogen ions to mechanically attach a phosphate group to an ADP molecule, forming new ATP. That final chemical step only goes through when a magnesium ion sits at the catalytic site and offsets the charge carried by the phosphate groups involved — a pattern that recurs across many enzymes of this kind.
Magnesium contributes to normal energy-yielding metabolism. EU-authorized wording · Regulation (EU) No 432/2012.
Access includes this page in full length, the reference tables for copper and magnesium, and the complete wording of both EU claims.
The claims on this page summarize a scientifically reviewed connection, authorized across the EU under Regulation (EU) No 432/2012. They are no substitute for a complete, varied diet, and they never take the place of an individual medical assessment. Anyone with a health condition, taking medication, or pregnant should check with a medical practice or pharmacy first, before making dietary supplements part of their routine.
The stated recommended intake is an upper limit, not a target to exceed. Keep supplements away from children. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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