Spirulina (33%), Barley Grass leaf powder (25%), Wheat Grass leaf powder (25%), Chlorella (16%), Stevia extract (<1%), a natural sweetner with zero calories. Each ingredient is 100% pure, premium quality and grown without pesticides or herbicides. To preserve nutrient content, each bottle is nitrogen flushed to eliminate oxygen. The cell walls of the chlorella have been cracked for superior digestibility and absorption.