Humarian presents Probonix for dogs and cats. Administering the product is simple. Pet owners just put the recommended number of drops onto their pet’s food or in their water once a day. The product uses eight of the most effective probiotic strains to support general gut health and immune system function in pets. It is an organic, non-GMO, all-natural supplement free from gluten, dairy, sugar, soy, eggs, fish/shellfish and peanuts/tree nuts.