Natural Products for Pets Powerful Vitamin and Antioxidant Nutrients Green Food Phytonutrients Plus TaurineGrasses contain compounds known as phytonutrients that help support your cat"s immune system. Proper nutrition is a cornerstone of maintaining good health.Vitamins A, C, E and selenium help to maintain healthy cell activity.Taurine, cysteine, glutathione - help support heart health, build muscle and may help reduce cellular oxidative damage.Wheat free. Yeast free. Gluten free. Non-irradiated.