Organic Spirulina 500 mg Tabs, Value Size , 500 Tablets, NOW FoodsNOW Foods Spirulina is a single celled fresh water algae and an incredible source of nutrients. It provides generous amounts of Beta Carotene, Vitamin B 12, Iron and Chlorophyll. Spirulina also provides RNA, DNA and important GLA fatty acids. Supplement Facts Serving Size: 6 Tablets Amount Per Serving % Daily Value Gamma Linolenic Acid (GLA) 30 mg Spirulina 3. 0 g (3,000 mg) Iron 1. 5 mg 8% Thiamine (Vitamin B1) 75 mcg 5% Riboflavin (Vitamin B 2) 110