Xyrem has the main ingredient is sodium oxybate 500mg/ml, belongs to the group of psychotropic drugs. Xyrem is commonly used in the treatment of patients with daytime drowsiness or excessive sleepiness (EDS) 7 years of age and older with narcolepsy (Narcolepsy). Understanding the basic information such as composition, indications, contraindications, dosage and side effects of Xyrem will help patients improve treatment results.