The Synergy Natural Organic Spirulina Tablets are a certified organic wholefood tablet made from 100% pure spirulina, to support your daily nutrient intake. Spirulina is a nutrient-dense freshwater plant naturally rich in protein, iron and beta-carotene, with one of the highest concentrations of chlorophyll found in any wholefood. The tablets contain no fillers or additives. Start with 2 to 4 tablets daily for the first week, building to a maintenance dose of 6 tablets daily with plenty of fluid.