| http://www.w3.org/ns/prov#value | - Seven of the trials used glutathione, four trials used melatonin, two trials used vitamin A, two trials used an antioxidant mixture that included beta-carotene and selenium, and four additional trials used, individually, N-acetylcysteine (NAC), vitamin C, vitamin E or ellagic acid, an antioxidant in fruits and nuts such as cranberries and walnuts.
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