Daily GHK-Cu dosing at research-standard doses (13mg per administration) delivers approximately 0.20.6mg elemental copper per dose, well below the tolerable upper intake level of 10mg per day established by the NIH
Natural food sources include: Beef steak: around 90 to 100 mg per 100 grams Pork: about 25 to 30 mg per 100 grams Fish: about 5 to 7 mg per 100 grams Chicken: about 3 to 5 mg per 100 grams Dairy and milk: approximately 3 mg per 100 grams On the other hand, a typical l carnitine supplement can provide 500 to 2,000 mg per serving, which is significantly more potent and allows users to control their L Carnitine dosage accurately
Pratley R, Amod A, Hoff ST, Kadowaki T, Lingvay I, Nauck M, Pedersen KB, Saugstrup T, Meier JJ
10.3389/fcell.2024.1424278 25 ChimerelC.EmeryE.SummersD