After some heavy math, you are getting: roughly 449 micrograms in each drop, 2694 micrograms which equals 2.694 milligrams per serving/6 drops. For adults older than 19 (including pregnant and breastfeeding): 1,100 mcg/ 1.1 milligrams per day is the recommended daily amount. Info from: 2014 University of Maryland Medical Center. 269.4 milligrams per bottle or 100 servings.