The Aussies have vegemite and ferrets have Furo-Vite! This all-natural vitamin paste is so tasty your ferrets won't know they are getting their essential daily vitamins. Furo-Vite provides excellent caloric value and can be used for ferrets that are ill or require additional nutritional value, due to the lack of essential ingredients in their diet. Safe for ferrets of all ages. 4.5 oz. Tube.