Stop use and ask a doctor if: an allergic reaction occurs. Seek medical help right away. You experience any of the following signs of stomach bleeding: feel faint, vomit blood, have bloody or black stools, have stomach pain that does not get better, pain gets worse or lasts more than 10 days, redness or swelling is present, new symptoms occur, ringing in the ears or a loss of hearing occurs. Reye's syndrome: children and teenagers who have or are recovering from chicken pox or flu-like symptoms should not use this product. When using this product, if changes in behavior with nausea and vomiting occur, consult a doctor because these symptoms could be an early sign of reye's syndrome, a rare but serious illness. Allergy alert: aspirin may cause a severe allergic reaction which may include: hives, facial swelling, asthma (wheezing), shock, stomach bleeding warning: this product contains an nsaid, which may cause severe stomach bleeding. The chance is higher if you: are age 60 or older, have had stomach ulcers or bleeding problems, take a blood thinning (anticoagulant) or steroid drug, take other drugs containing prescription or nonprescription nsaids (aspirin, ibuprofen, naproxen, or others), have 3 or more alcoholic drinks every day while using this product, take more or for a longer time than directed. If pregnant or breast-feeding, ask a health professional before use. It is especially important not to use aspirin during the last 3 months of pregnancy unless definitely directed to do so by a doctor because it may cause problems in the unborn child or complications during delivery. Keep out of reach of children. In case of overdose, get medical help or contact a poison control center right away. Do not use: if you are allergic to aspirin or any other pain reliever/fever reducer, this product for at least 7 days after tonsillectomy or oral surgery unless directed by a doctor. Ask a doctor or pharmacist before use if you are taking a prescription drug for: gout, diabetes, arthritis. Ask a doctor before use if: stomach bleeding warning applies to you, you have a history of stomach problems, such as heartburn, you have high blood pressure, heart disease, liver cirrhosis, or kidney disease, you are taking a diuretic, you have asthma.