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10.1074/jbc.M209124200 58 ZhengJ.ZhuoJ.NieJ.LiuY.ChenB.WuA.et al (2021)

K.HarperM

The FDA established Category 1 as part of the evaluation process for substances that may be eligible for compounding while additional data is reviewed regarding safety, characterization, and clinical considerations. In recent years, several peptides have undergone review as part of the FDAs evaluation of drug substances, with the agency citing the need for additional information regarding characterization and safety data before determining long-term eligibility for compounding. Regulatory and industry discussions continue regarding whether certain peptides may be reconsidered as additional data becomes available, reflecting continued evaluation of clinical interest alongside safety oversight considerations. Recent coverage indicates the FDA is expected to convene expert panels to review whether broader access to certain peptides may be appropriate within regulated compounding frameworks, highlighting the ongoing evolution of peptide-related regulatory guidance. Because regulatory status may evolve, providers often monitor updates to ensure treatment decisions align with current guidance and applicable compounding standards

Iran J Immunol

The question of whether L-glutathione is the same as reduced glutathione is a perfect example of why clarity matters