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Clinical evidence of using copper peptides for hair growth: Copper-peptide formulations have been assessed in different conditions in several peer-reviewed studies: A 1% GHK-Cu serum was applied twice a day to participants in a randomized, double-blind study (n = 60, 24 weeks)
Both cite the Institute of Medicine which has not established a "Tolerable Upper Intake Level" for vitamin B12, despite having done so for other nutrients as their source
Possible Side Effects of Hydroxocobalamin Injection
2002;2:CD001520
Yes, B12 injections are very effective at reversing and preventing a vitamin B12 deficiency, as they allow for 100% absorption directly into the tissues
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