Can You Take Copper and Molybdenum Together?

Dose or timing may matter

The short answer

Molybdenum antagonizes copper by forming insoluble copper-molybdate complexes (thiomolybdates) in the gut and blood, reducing copper bioavailability and potentially causing copper deficiency.

How to arrange timing

Avoid high-dose molybdenum supplements when copper status is marginal; monitor copper if taking molybdenum long-term.

Reference

Reference noted for this combination: Brewer GJ. The use of copper-lowering therapy with tetrathiomolybdate in medicine. Expert Opin Investig Drugs. 2009;18(1):89-97

Important context

Whether supplements suit you together also depends on dose, product formulation, health conditions, and medication use. Ask a doctor or pharmacist first if you take medication, are pregnant or breastfeeding, or have a chronic condition.