Spirulina 500 mg. Polynesian Blue-Green Algae Phytonutrient Supplement This nutrient-rich natural food product is an exceptionally valuable source for high-quality protein and amino acids, plus trace minerals, B-Complex Factors, Vitamin A and Phytonutrients. Each tablet contains highest-quality Hawaiian-cultured Spirulina - 500 mg. Product Name Size Product No: Price Spirulina 500 mg 250 230U $ 25.90