For dose and safety guidance in one place, see this pages Are There Any Safety Risks? section and the Start low note in the precautions
Hence, they only know the impact and not the science behind it
Lamb 217 mg carnitine per 4oz Lamb has the highest concentration of carnitine of any food
Description GHK-Cu (Glycyl-Histidyl-Lysine Copper) | 99% Pure Research Peptide Advance your research with GHK-Cu , a naturally occurring copper tripeptide delivered here as a pharmaceutical-grade, 99%+ purity compound
There are certain suppliers who do offer this peptide
[DOI] [PMC free article] [PubMed] 26.Zhang M., Bi L.F., Fang J.H., Su X.L., Da G.L., Kuwamori T., Kagamimori S