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Syringes are inexpensive compared to the peptide
When taken this way, enzymes in the stomach and intestines may destroy much of the glutathione, meaning only a small portion enters circulation
Additionally, as B12 is also necessary for brain and nerve function, a person may begin to notice brain and nervous system symptoms
Injectable research protocols commonly reference GHK-Cu doses in the range of 1-2mg per administration, administered once daily or several times per week depending on the research design
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