Milk thistle has no major hepatotoxic effects, and N-acetylcysteine, an agent used to attenuate acetaminophen-mediated hepatotoxicity, is also unlikely to be a factor in his illness.

• 乳蓟无主要的肝毒性作用，N-乙酰半胱氨酸常用于中和对乙酰氨基酚引起的肝毒性作用，所以也不太可能是患者的致病因素。