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Glutathione is a potent antioxidant that can help neutralize free radicals, preventing further damage to cells

GHK-Cu stands apart from signal peptides (like argireline/acetyl hexapeptide-3) that work by modulating neurotransmitter release at the neuromuscular junction

This can result in an accumulation of fatty acids in the cytoplasm and a reliance on other less efficient energy pathways, potentially leading to fatigue and decreased physical performance

Shiraz E-Medical Journal, 15 (4)

After the intervention, both E and EP groups showed improved fatigue resistance in the rectus femoris and biceps femoris, and only the E group showed gains in health-related quality of life (HR-QOL)