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GHK-Cu is sold as a research compound and is not FDA-approved for human use
Some FDA-approved peptide medications have proven their value for supporting health after rigorous testing, clinical research, and real-world use
The specific subclass of the IgG response also correlates with severity, with the potent immune-activating IgG1 and IgG3 (and particularly the combination of the two) being the most common in severe cases [181,182,183]
How do I know if I am B12 deficient
Maybe just a fraction of each dose
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