Reye's syndrome: children and teenagers who have or are recovering from chicken pox or flu-like symptoms should not use this product. If changes in behaviour 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. Stop and ask a doctor if: product has been used for 3 days, 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, ringing in the ears or a loss of hearing occurs. Ask a doctor or pharmacist before use if you are: taking any other drug containing an nsaid (prescription or nonprescription), taking a blood thinning (anticoagulant), steroid, diabetes, gout or arthritis drug. If pregnant or breastfeeding, ask a health professional before use. Keep out of reach of children. In case of an overdose, get medical help or contact a poison control center right away. Do not use: if you are on a sodium restricted diet, if you are allergic to salicylates (including aspirin) unless directed by a doctor, if you have stomach problems (such as heartburn, upset stomach, or stomach pain) that persist or recur, or if you have ulcers or bleeding problems unless directed by a doctor. Ask a doctor before use if you have: frequent, burning urination for the first time, the stomach bleeding warning applying to you, history of stomach problems, such as heartburn, high blood pressure, heart disease, liver cirrhosis, bleeding problems, diuretic use, ulcers, kidney disease, reached age 60 or older. When using this product: do not take more than the recommended dosage. Stomach bleeding warning: this product contains an nsaid, which may cause stomach bleeding. The chance is higher if you: 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, have stomach ulcers or bleeding problems, take a blood thinning (anticoagulant) or steroid drug, are age 60 or older, take more or for a longer time than directed.