It is also a human medication. Ask your vet to write a prescription for you. I recently had to give all of my ferrets amoxi and I was able to get all that I needed free! Several places here fill certain antibiotics for free, or at a very low cost. I ended up needing two large bottles. The first, I had them mix. Because I knew I wouldn't use the entire second bottle, I ask them not to mix it and I measured out, and mixed, what I needed, using distilled water. I still have 1/2 bottle that I can use for my wildlife or future ferret needs. Once it's mixed, it's only good for two weeks. Katharine Florida [Posted in FML 6821]