Grown in the United States. 500 mg. Spirulina plus Chlorophyll, Vit. A., B1, B2, B12, Iron and Gamma Linolenic Acid.Spirulina is a single celled fresh water algae and an incredible source of nutrients. This product has similar nutritional properties compared to high priced multilevel products. This product can also be helpful in a weight loss program. Take 2-3 tabs twice a day.