What is a good dietary supplement for my pet ferret?

I was told by my vet to look for a product called Ferretone at Mounds Pet Food Warehouse when I was looking for a treat for my ferret. I went there to check and didn't find it. I did find something similar called FerretVite 8&1 that my ferret LOVES and it also has different vitamins and minerals that are good for her. It has really worked well for me. It is also a nice distraction when it's time to clip nails...