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Claire Chang, M.D., says is gentle, pregnancy-safe, and can be used long-term
Important translational barriers persist, including limited clinical validation, fragmented mechanistic understanding across isolated pathways, and pharmaceutical limitations such as poor solubility, rapid metabolism, and batch variability that reduce reproducibility
Studies in which NAC has been used for only a few week showed little benefit, whereas other studies suggest NAC needs to be taken for at least a three-month period to experience beneficial effects.The vast majority of studies have used oral NAC supplementation (taken by mouth) for at least several weeks to several months

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