Acetaminophen/ codeine (3)Classification and indication?,”Tylenol 2, 3 June 23, 2017 mfadmin Pharmacy Average Rating 0 out of 5 stars. 0 votes.You must log in to submit a review. Acetaminophen/ codeine (3)Classification and indication?,”Tylenol 2, 3 and 4PainAnalgesic”