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Am J Clin Nutr 2000 , 72 , 618S-623S [2] Rebouche, C.J

Most human studies used it around 2% (as Glutathione or Glutathione Disulfide) and a 2% oxidized glutathione lotion and a 2% S-acyl glutathione cream are the concentrations with actual clinical data behind them

Rich in antioxidants, Reishi may help fortify the body's natural defenses

Their findings, which were published in the journal Antioxidants , suggest supplementing those who test positive for COVID-19 with a combination of glutathione precursors (which was shown in previous research to improve these levels, along with reducing inflammation) may be an effective treatment