Beaphar Multi-Vitamin Paste for Ferrets contains two functions in one tube. The first function is to provide valuable minerals and vitamins such as taurine. The second function is a special ingredient called MOS, which is a prebiotic which stimulates the growth of friendly bacteria at the expense of bad bacteria, which helps to maintain a healthy intestinal flora and gut function. Additional ingredients assist the passing of hairballs, which may occur in the moulting season.