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Comparative Biochemistry & Physiology Part B Biochemistry & Molecular Biology 154 , 121133 (2009)

3.1 Therapeutic controversies over use of vitamin A supplement during cancer treatment During cancer treatment, giving patients vitamin A supplements can help improve the overall health and enhance survival rates

However, its crucial to understand that no IV glutathione product is FDA-approved for skin lightening in any major regulatory jurisdiction, and the only placebo-controlled clinical trial showed poor efficacy with serious safety concerns

[167] reviewed 8 RCTs involving 1500 patients

Some of the most abundant food sources of glutathione include cabbage, Brussels sprouts, garlic, onions, broccoli, and cauliflower