Everyone talks about the glow from GHK Cu Nobody talks about the burn. Yes, GHK Cu gets hyped for tighter looking skin, scar support, collagen support, and regeneration. And the reason people talk about it Succinic acid enhances sedative activity of diazepam through GABAergic receptor modulation: Evidence from behavioral approach and computational insights Naunyn Schmiedeberg's Archives of Pharmacology Springer Nature Link Capsaicin: Current Understanding of Its Mechanisms and Therapy of Pain and Other Pre Clinical and Clinical Uses 16. Receptor Regulation Principles of Pharmacology Study Guide 7. Response to Excessive and Reduced Stimulation of Receptors: Principles of Pharmacology Study Guide