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But the most important answer is regulatory and medical: injectable GHK-Cu is not FDA-approved, and this article should not be used as self-injection instruction

doi: 10.1186/1741-7015-9-24, 127

Methylation is needed for synthesis of myelin, neurotransmitters (including adrenalin and melatonin), epigenetics, protein repair and much more

Sensitive skin types, rosacea-prone individuals, those who are pregnant or breastfeeding, anyone recovering from a cosmetic procedure, and anyone who has tried retinol and found the side effects intolerable all have a clear alternative in GHK-Cu

A study of patients with non-alcoholic fatty liver disease (NAFLD) revealed that giving 300 mg of glutathione daily for four months resulted in significant reductions in elevated ALT (an enzyme associated with liver damage), triglycerides, and ferritin