Animal Essentials Super Immune is formulated to boost your pet's immune system. Super Immune serves as a better-tasting alternative to Goldenseal/Echinacea Blend. Animal Essentials Super Immune is a Glycerin-Based formulation for both Cats and Dogs. All Animal Essentials tinctures are formulated by leading veterinarian 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.