Are there any benefits to taking the supplement nac? any noteworthy drug interactions? and can it be taken with milk thistle?

N acetylcysteine: N-acetylcysteine is effective in tylenol (acetaminophen) overdose, as a mucolytic agent in lung diseases associated with increased mucous, antiviral agent for influenza A, certain psychiatric illnesses, prevention of hemorrhagic cystitis in cancer chemotherapy, There is a high incidence of allergic reactions with skin rash, hypotension and wheezing. No other beneficial effects are reported. Milk Thistle OK