Animals' Apawthecary Spring Tonic Herbal Remedy helps dogs and cats fight seasonal allergies using a special concoction of these time honored herbs. All tinctures are formulated by leading veterinarian herbalists who are intimately familiar with the needs and sensitivities of dogs and cats. The herbs used are selected from the highest quality certified organic or sustainable wild-harvested North American sources in the world. These naturally balanced herbal blends have a sweet flavor that appeal to most dogs and cats and come with an unbreakable, recyclable, plastic dropper to assure safe application. 4oz and larger sizes are not recommended for retail sales.