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This means very small amounts of the peptide can trigger significant biological responses throughout the body

Red-light therapy uses infrared light to support cellular energy and repair processes, potentially boosting the effectiveness of copper peptides

Nat Med 2012

For example, a small number of subjects reported the following mild side effects in the course of a four-week glutathione study at the dose of 1g/day [13]: Flatulence Loose stools Flushing Weight gain In a more specialized study involving cystic fibrosis patients and much higher glutathione doses, some of the patients reported tightness in the torso, diarrhea, and fever-like symptoms [14]