What is the treatment for Wernicke’s encephalopathy?,”Thiamine 100 mg, PO, IM June 22, 2017 mfadmin Medicine Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review. What is the treatment for Wernicke’s encephalopathy?,”Thiamine 100 mg, PO, IM or IV”