Warning: Tamper evident feature: Do not use if safety overwrap or "S" tear-tape is missing or torn.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. Shock. Asthma (wheezing).Liver warning: this product contains acetaminophen. Severe liver damage may occur if you take. More than 4 powders in 24 hours, which is the maximum daily amount. With other drugs containing acetaminophen. KEEP OUT OF REACH OF CHILDREN. Visit www.P65Warnings.ca.gov for more information.