Boost the Immune System – Zesty Paws® Aller-Immune Bites™ are grain free soft chews that support immune, histamine, and digestive health for dogs with skin, seasonal, and environmental allergy issues.Enhanced WITH EpiCor® – At 80 mg per chew, EpiCor® contains vitamins, protein, fiber, and antioxidants that are clinically proven to support the body's natural immune defenses to keep your dog healthy.Prebiotic & Probiotic Complex – These supplements feature a powerful Prebiotic and five strains of Probiotics for 250 million CFU of healthy bacteria that supports pet digestion and immune health.WILD ALASKAN SALMON OIL - Each chew contains Salmon Fish Oil to provide Omega 3 fatty acids EPA & DHA that provide skin and immune support for dogs with allergies that cause itching and hot spots.NATURAL INGREDIENTS - These chewables contain Colostrum, a pre milk that helps with allergies, immune function, and digestion, plus Apple Cider Vinegar and Organic Licorice Root for additional care.