Can You Take GHK-Cu and Zinc Together?

May affect absorption

The short answer

Zinc competes with copper for absorption via metallothionein binding. Since GHK-Cu provides copper, high-dose zinc supplementation may reduce the bioavailability of the copper component of GHK-Cu.

How to arrange timing

Separate GHK-Cu and zinc supplements by at least 2 hours. High-dose zinc may deplete copper from GHK-Cu.

Reference

Reference noted for this combination: Pickart L, et al. GHK peptide as a natural modulator of multiple cellular pathways in skin biology. Biomed Res Int. 2015;2015:648108.

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.