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(A) Fresh NAC standard, (B) NAC standard at RT for 24 h, (C) NAC standard at RT for 48 h, (D) NAC standard at 37 C for 24 h, (E) NAC standard at 37 C for 48 h, (F) Placebo sample at RT for 24 h, (G) Placebo sample at RT for 48 h, (H) Placebo sample at 37 C for 24 h and (I) Placebo sample at 37 C for 48 h

Certain chemotherapy regimens, some antibiotics if taken for long periods, and long-term use of the epilepsy drug phenytoin, carry a risk of nerve damage