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But "supports immune cell function" is a biochemical statement, not proof that IV glutathione prevents or shortens illness

Reviews published in 2025 describe a body of research dominated by animal and cell studies, with signals suggesting effects on angiogenesis (the growth of blood vessels), growth-factor signalling (mainly growth hormone) and musculoskeletal healing

The animal research is promising, but we are still in early days of understanding how this peptide works in humans

Jiang WD, Liu Y, Hu K, Jiang J, Li SH, Feng L, Zhou XQ

Many athletes find they can increase training intensity and frequency due to improved recovery capacity and reduced injury susceptibility