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ghk-cu tolerance downregulation desensitization loss of effectiveness over time Copper Peptide Regeneration Review (2018) — Research Summary Safety and Efficacy of Approved
Description
doi: 10.1007/s11695-014-1225-y

No Phase 3 results have been published as of May 2026

Effect of Gly-Gly-His, Gly-His-Lys and their copper complexes on TNF-alpha-dependent IL-6 Secretion in normal human dermal fibroblasts
How it works: Epitalon is a synthetic version of epithalamin, a substance from the pineal gland studied by Russian gerontologist Vladimir Khavinson
