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Plasma levels of GHK-Cu decline from around 200 nanograms per milliliter at age 20 to approximately 80 nanograms per milliliter by age 60
We use cyanocobalamin , the form of vitamin B12 with the longest clinical history, the most extensive research backing its safety, and the consistent potency required for repeated treatments
Retrieved May 27, 2025, from Brooks, M
Patients with neurological involvement require more intensive initial treatment with injections on alternate days until no further improvement occurs
Andres, Expert Opin Pharmacother 2010)
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