Whether your dog suffers from occasional gas, bloating, or an upset stomach, Vets Best Gas Busters Supplements for Gas Relief and Digestion Aid can help. Our veterinarian-formulated blend of key natural ingredients (including parsley, slippery elm bark, and ginger root) provides soothing relief, while enzymes and probiotics help support a healthy gut microbiome. Ingredients: Parsley Lea, Slippery Elm Extract, Ginger Root, Enzyme Blend