Suitable for vegetarians. Sugar and starch free. Solgar's 100% Hawaiian Spirulina Powder is free of corn, yeast, wheat, soy and dairy products, and are formulated without the use of preservatives, artificial flavors or colors. Solgar's 100% Hawaiian Spirulina is carefully cultivated in an environment that is free from pesticides and pollutants. Spirulina is a microscopic plant organism, made directly by the interaction of sunlight and water (Photosynthesis). It is a concentrated nutrient dense whole food including a complete array of nutrients.