Postoperative Ibuprofen and the Risk of Bleeding After Tonsillectomy With or Without Adenoidectomy

Inclusion Criteria: * Patients ages 2-18 undergoing tonsillectomy with or without adenoidectomy by electrocautery alone for sleep disordered breathing or infectious tonsillitis will be included. * Patients with complex medical conditions and craniofacial abnormalities will be included. * Informed consent and child assent will be required for enrollment Exclusion Criteria: * Patients with a known personal or family history of a bleeding disorder will be excluded. * Patients with a history of asthma, kidney or liver problems will also be excluded. * Patients with tonsillectomy or adenoidectomy performed using a cold knife technique, microdebrider, coblation or plasma knife. * Patients on NSAIDs for other medical conditions, or those who have taken NSAIDs within 1 week of surgery will be excluded. * Patients with allergy to aspirin or other NSAIDs, acetaminophen, Red Dye #40 or Red Dye #33 will also be excluded. * Pregnancy testing using urine β-subunit of hCG gonadotropin (beta-HCG) will be performed on all children \> 13 years of age, or those younger than 13 who are menstruating; this is the testing protocol used at the Children's Hospital of Boston. Patients found to be pregnant will be excluded from participation.