Infantile hemangiomas are the most common childhood vascular tumors. Propranolol is a β-adrenergic blocker that has proven effective in the treatment of this tumor. Numerous studies around the world have been published, describing satisfactory responses in pediatric populations with a higher cure rate and fewer adverse effects than when using corticosteroids. The aim of this study was to evaluate the efficacy and adverse effects of propranolol in Moroccan pediatric patients diagnosed with infantile hemangioma who were treated with oral propranolol. A prospective study was conducted from May 2009 to May 2017 in the department of dermatology of a hospital in Casablanca. All the patients who had infantile hemangioma were included. The study comprised 121 patients with infantile hemangioma: 90 girls and 31 boys. The mean age was 6 months. The majority of hemangiomas were mixed (63%) and located on the face and neck. The treatment was well tolerated by all the patients. The dosage of propranolol was gradually increased from 1mg to 2mg/kg/day. We noted a decrease in coloration after 48hours. The healing period for ulcerated hemangiomas was 20 days. A decrease in size was noted after 1 month, while a decrease in palpebral obstruction occurred after 3 days. Treatment with propranolol in this group of Moroccan pediatric patients proved to be safe and effective at a dose of 2 mg/kg/day, reducing the size and coloration of the hemangioma. Treatment should be stopped at an appropriate time, which is determined primarily by the lesion regression rate after propranolol treatment.