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Comments: Since it is still not fully clear whether antioxidant treatment influences the effectiveness of cancer drugs during treatment, one option is to begin therapy with acetylcysteine, or other antioxdiants, a week after the last chemotherapy dose. The appropriate dosage of NAC for post-chemotherapy antioxidant treatment is not known, but a dosage of 500 mg three times a week seems reasonable and prudent. See http://www.raysahelian.com/acetylcysteine.html for more info.