Denamarin for cats and small dogs helps maintain the health of your pet's liver. The liver is responsible for removing toxins, storing energy, aiding digestion, and supporting the immune system. Denamarin provides liver protection and detoxification and helps to increase levels of a potent antioxidant called glutathione, which helps with detoxifying the liver and may help in liver cell repair and regeneration. Denamarin is the #1 veterinarian recommended liver support brand. The Silybin (Milk Thistle Extract) in Denamarin has been shown to have higher absorption in dogs than the standardized milk thistle extract found in many other products. Denamarin is made in the USA from globally sourced ingredients