The IAMS Proactive Health line of supplements is designed with tailored nutritional benefits for dogs. IAMS Proactive Health Healthy Immune System Supplement for Dogs is a daily supplement developed with vets to support your dog’s immune system. It is easy to feed and gentle on teeth which makes it easy for dogs to chew. It is made with scientifically proven beta-glucan. Vitamins E & C are antioxidants that support natural body defenses by protecting against free radicals. Beta-glucan helps support a healthy immune system. It can be fed to dogs older than 1 year. Refer to the back of the pack for feeding guidelines and dosage. Nourish your dog with IAMS Proactive health supplements to support them to be healthy.?