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Gopal Grandhige, MD, FACS, Board-Certified Surgeon Last Reviewed: February 28, 2026 GHK-Cu is a copper peptide complex (glycyl-histidyl-lysine combined with copper) that naturally occurs in human saliva, plasma, and urine

Concerns about BPC-157 organ effects extend beyond sleep

Stable, one bottle solution

Furthermore, evidence for changes in the level of blood or tissue mitochondrial function or metabolic readouts is currently lacking for these studies

Short-term (hours to days) exposure is generally tolerable for lyophilized peptide

Tests for IGF-1 Levels IGF-1 status can be checked with a simple blood test, though these are not routinely performed