I saw a dermatologist yesterday for a rash yesterday and he prescribed NAC 600 daily. After seeing the list of ailments it s used for I don t know why it was prescribed for me? The rash has been active for about 5 months, it s sporadic, spots on legs, arms and hands. Have tried alcohol, antibiotic ointment, oatmeal & Epsom salt baths, peroxide, medical pre-surgery soap, steroid cream, mostly in vain. I would appreciate more advice or information. Thank you.