oral glutathione efficacy skin lightening randomized controlled trial as a whitening agent: Facts, myths, evidence and controversies Glutathione as a skin‐lightening agent

Curcumin, demathoxycurcumin, bis-demethoxycumin, and calebin-A, all extracted from Curcuma longa, have been shown to protect PC12 cells from -amyloid assault (Maurer et al., 1997

However, differences in absorption, safety, and effectiveness are not well established in large human trials

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Corticosteroids have antiinflammatory, immune-modulating, and antifibrotic effects, which may be beneficial in chronic hepatitis

Ciprofloxacin (5 g/disc) served as the positive control, while DMSO alone was used as the negative control to ensure solvent neutrality