An open prospective observational study at the Children's Hospital of the Californias in Tijuana, Mexico was performed on ambulatory pediatric patients between the ages of 3 and 12 months diagnosed with infantile hemangioma. Patients were treated with an oral solution of propranolol in doses ranging from 0.5 to 2.5 mg/kg/day. Children were monitored monthly by the physician in charge, at which time clinical and treatment data were collected