Addiction Viva La Venison Dry Cat Food - 4LBS A well-balanced and nourishing diet helps cats strengthen their immune system. With Venison as the #1 ingredient, Viva La Venison Entrée is specially formulated with Addiction's proprietary Immune Boost formula, a nutritionist-designed blend of prebiotics, vitamins, minerals, and phytonutrients to help strengthen your cat's natural defense to fight infection and inflammation as well as promote digestive health.