CBN is created by the oxidation of THC-A. We've taken our full spectrum CBD oil and have added an extra 300mg of CBN to it, or 10mgs per serving, to aid in rest and relaxation. Take this oil 30 minutes before bed for a restful night of sleep. 300mg CBN per bottle 300mg CBD per bottle There are 30 droppers per bottle, so if you take a dropper every day, this bottle should last a month.