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Causes and considerations: Direct taste sensation from the copper-containing complex Post-nasal drip from nasal formulations Transient effect often mitigated with delivery technique adjustments The metallic taste is not typically a clinically meaningful adverse effect, but it can be bothersome enough that patients discontinue therapy

Yes, the copper(II) ion is critical for GHK-Cu's biological activity

Its made up of 43 amino acids, and is generally taken alongside BPC-157

One notable investigation used an advanced ionic liquid microemulsion delivery system containing GHK-Cu

Others on repair or signaling

It is produced in the liver