There was a suggestion on the list recently to supplement the diet of the ferret with the apparent vitamin overdose using Nutrical. I don't know that that is really a good idea for a ferret with that condition. Nutrical is, after all, not just a caloric supplement, but a vitamin and mineral supplement. It contains 1045 IU of vitamin A per teaspoon. When there was a discussion about safe doses of vitamin A a few months back, including info from Dr.Williams animal nutritionist friend, I thought the recommended maximum dose of Ferretone was 1/3 of a teaspoon. Ferretone contains 1812 IU per teaspoon, so maximum daily vitamin A dose would be 604 IU (because this was the limiting factor in the Ferretone dosage). Therefore, the most Nutrical you would want to offer in a day would be a little over 1/2 a teaspoon. Nutrical contains 30 calories per teaspoon, so I would think that 15 calories might not be worth boosting the vitamin A in this ferret. Remember that many foods contain vitamin A supplement too. Just something to think about... Debra in Ft.Worth [Posted in FML issue 0934]