It consists of a peptide consisting of three amino acids (GHK: glycine, histidine & lysine) and a fatty acid molecule (palmitoyl)
"Two hepatic cytoplasmic protein fractions, Y and Z, and their possible role in the hepatic uptake of bilirubin, sulfobromophthalein, and other anions"
Front Neurol 12:769511 Niu YJ, Jiang ZM, Shu H, Li CF, Liu W, Yao GX, Jiang J, Li JQ, Longo A (2002) Assay of carnitine in plasma and urine of healthy adults
Diese Heterogenitt spiegelt die Zwischenposition dieses Peptids wider, das in den meisten Lndern weder ein zugelassenes Medikament noch eine streng kontrollierte Substanz ist