melanotic macule buccal mucosa Mucosal melanocytic macules Oral Mucosal Melanosis | IntechOpen

Excess copper contributes to oxidative stress, inflammation, and potential toxicity, the opposite of what GHK-Cu is supposed to do. Researchers have generally found that GHK-Cu helps regulate copper rather than overload it, but the line between beneficial and harmful copper exposure depends on dose, tissue type, and individual biology

They suggested that the observed improvement in the neuromuscular function may be due to the increased sarcoplasmic reticulum Ca 2+ release ( supplementation was related to the increase in the tetanic Ca 2+ concentrations (59)

I've had a very nice life with a good salary and all that

This may include repair and support of gut health and detox pathways