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Gao S, Deng J, Su Z, Liu M, Tang S, Hu T, et al

This is one of the main reasons it has not advanced into clinical use

Across the trials, effect sizes differ by peptide class, dosage, and treatment duration, with the most consistent improvements observed in metabolic indicators, such as fasting glucose levels and HOMA-IR, and body composition

The absence of approval means there is no licensed manufacturer, no quality standards enforced by health authorities, and no legal framework for medical use

Journal of Peptide Science

For example, the active agents loaded into liposomes are mixed with a chitosan-glycerophosphate composition