8 HR ARTHRITIS PAIN (ACETAMINOPHEN) TABLET, FILM COATED, EXTENDED RELEASE [CVS WOONSOCKET PRESCRIPTION CENTER, INCORPORATED] • with any other drug containing acetaminophen (prescription or nonprescription). If you are not sure whether a drug contains acetaminophen, ask a doctor or pharmacist. • if you are allergic to acetaminophen or any of the inactive ingredients in this product • pain gets worse or lasts more than 10 days • fever gets worse or lasts more than 3 days • new symptoms occur • redness or swelling is present These could be signs of a serious condition.