Sea Kelp is rich in trace minerals and phytonutrients to support a healthy immune system and cardiovascular function in dogs and cats. This certified organic Norwegian kelp has a unique dietary fiber profile, which acts as a prebiotic and has antioxidant properties to support the GI tract and digestion, help maintain immune health, support a healthy heart, and enhance the skin and coat. This kelp supplement for dogs and cats delivers numerous vitamins and minerals, including iodine, to support normal thyroid function and maintain your pet's optimal health. Key Benefits: Supports the Immune System in Cats Promotes Healthy Eye Function Supports Respiratory Health in Cats Promotes the Production of Antibodies and Enzymes How It Works L-Lysine is an essential and beneficial amino acid that works to ensure calcium absorption. This helps cartilage and collagen production, along with repair of the connective tissue. It also supports immune deficiencies.