does ghk cu affect gh or igf 1 levels and IGF-1 Regulation of Three Metabolic Pathways. GH inhibits Effects of GH and IGF-I
Description
Neuroimage 44 , 502508 (2009)

Cells 9 , 1799 (2020)
However, ongoing research continues to explore its various potential uses

Meat : Beef liver is an excellent source