Each carton contains one bottle of 180ml Xyrem, a press-in bottle adaptor consisting of an LDPE bottle-well housing, a Silastic Biomedical ETR Elastomer valve, an acrylonitrile butadiene styrene terpolymer valve retainer and LDPE tubing, a graduated 10ml measuring device (polypropylene syringe), two polypropylene dosing cups and two HDPE child resistant screw closures.