Patients with sensitivity to tartrazine dyes, nasal polyps, and asthma may have increased risk of salicylate sensitivity. Previous nonreaction does not guarantee future safe taking of medication. Use with caution in platelet and bleeding disorders, in dehydration, in erosive gastritis or peptic ulcer, and in renal impairment. Children and teenagers who have or are recovering from chickenpox or flu-like symptoms should not use this product. Changes in behavior (along with nausea and vomiting) may be an early sign of Reye’s syndrome.