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Serious but rare risks include pancreatitis and thyroid concerns
In addition, there is evidence to support a benefit from increasing brain glutathione levels (e.g., via the glutathione precursor N-acetylcysteine) in conditions such as schizophrenia (Ng et al., 2008
Ladiges, "The potential of GHK as an anti-aging peptide," Aging Pathobiol
GLP-1s are the only peptides clinically proven to help with weight loss
These can irritate the skin, cause dryness, and damage the natural barrier, making skin look dull
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