Dr Ball was asking about vit C for ferrets. It has been recommended for use in ferrets with lymphoma anecdotally. To quote from the book (Essentials of Ferrets) " Vitamin C (25-50 mg/kg BID PO) is used in the buffered, ester, or chelated form as it causes less GI upset.147 Start at 100 mg q 12 hrs and gradually work up to the highest dose (over several weeks) that does not cause soft stools. Mixing powder from capsules with food works well. Liquid vitamin C is usually available at health stores, and many pets take it readily. " Karen Purcell DVM Author of Essentials of Ferrets: A Guide for Practitioners [log in to unmask] Uxbridge, MA [Posted in FML issue 3319]