The 3% GHK VIP Luxury Serum represents the highest concentration topical GHK-Cu product from the scientist who discovered the molecule
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Additional studies could be directed toward optimizing delivery techniques, dosing schedules, product stability, and intranasal formulations
[1] Because intrinsic-factor-dependent uptake in the distal ileum can be absent in conditions such as autoimmune gastritis, pancreatic insufficiency, or bariatric surgery, the intramuscular or subcutaneous route bypasses gastrointestinal barriers and reliably restores serum concentrations
doi: 10.1006/bbrc.1997.7930
Mild and temporary side effects were reported in the first four weeks and resolved by the next evaluation, indicating that the glutathione supplement might be safe to use at the described dosage for this period of time