The Effects of Reducing Stomach Acid on Post-tonsillectomy Pain

This study has been limited to children and adolescents ages 5-18 who are undergoing tonsillectomy for an indication of obstructive sleep disturbance (snoring, choking/gasping or pauses in breathing during sleep.) Study participants will be randomized to two groups: study medication (Lansoprazole) or an inactive substance(placebo). Participants will be asked to do all of the following: 1. Take the study medication twice a day for 14 days. 2. Keep a log book which will include: * Record the medications and amount of each medication taken each day for 14 days. This includes pain medication and the study drug. * Record your child's activity level daily for 14 days. * Collect your child's urine one time daily and test it using special medicated strips to monitor their daily liquid intake for 14 days. 3. Meet with a Research Assistant or Study Physician 14-21 days after the study to collect the log book and perform a post-operative examination.