Ingestion of industrial-strength hydrogen peroxide is rare. Fatal outcomes have been reported with solutions of 35%. We report a six-year-old boy who unintentionally ingested an unknown quantity of hydrogen peroxide with a concentration of 60%. Upon admission to our Pediatric Intensive Care Unit he was intubated and received ventilatory assistance for 48h. Upper gastrointestinal endoscopy was performed soon after admission and laparoscopy was performed 24h later. Recovery was satisfactory, and the patient was discharged on day 18 with no evidence of pathological sequelae.