I found this information for powdered brewer's yeast. Looks like 2 tablespoons is 30 grams, or 3,000 mg. So you're giving 2/3 of what is listed on the vitamin tables lower down on this page
http://nutritiondata.self.com/facts/custom/1323569/2
http://nutritiondata.self.com/facts/custom/1323569/2