What Are The Side Effects Terbinafine HCL?

hi my husband is taking terbinafine HCL. on a couple ocasions he told me he stopped taking it because he felt nauseated. I suggest that he takes it with some food or right before bed. and i just read that this medication is not required to be taken with food. anyway, he took it last night, and I suspect he had also taken maalox within a few hours. he was feeling sick when he woke up today and thus skip breakfast and didnt eat until 3pm. He said he cant explain how he feels, he just feels sick. He said he feels his upper chest front and back is stuffed NOT hurt, just stuffed. I thought it sounded like his acid. he was feeling so ill he forced himself to throw up. He drove himself to the emergency room and not return yet. Im worried could it the Terbinafine HCL mess up his liver? thank you for helping.