Supports Liver Health. Glycerin-Based. Made For Dogs and Cats. 1 ounce glass bottle with dropper. Protects the liver against toxins (including some drugs and heavy metals), activates protein synthesis, and stimulates growth of new liver cells to replace those that are dead or damaged. Milk Thistle also has strong antioxidant and anti-inflammatory actions. All Animal Essentials tinctures are formulated by leading veterinarian's herbalists. These veterinarians are intimately familiar with the needs and sensitivities of cats and dogs. The herbs Animal Essentials uses are selected from only the highest quality, certified organic or wild-crafted sources found in North America. Animal Essentials naturally balanced herbal blends have a sweet flavor that appeals to most dogs and cats.