Is Metacam approved for use on cats?

Yes, here's a website i found for you!!

Metacam is commonly used in cats, even though the label says for dogs only. When a veterinary medication goes through testing to be ok'd by the FDA, they do medical trials on certain animal types. Dogs and horses tend to be the big ones that pharmaceutical companies like to get the drugs labeled for. These are the species that make up the biggest portion of who uses the medications. It costs more money to get them labeled for use in cats.

The use of Metacam is considered "off-label", which is really common in veterinary medicine. Most of the medications that are used like this are regularly used in this manner, but they have not been through clinical trials, with reported results.

I personally have not used oral Metacam in my cat patients, but I frequently use the injectable form. A lot of vets in my area do use it, and seem to have good success with it. Technically, your vet should have told you that this was an "off-label" use of the medication, and had you sign a release. Rules are different in each state, so I don't know if that applies to you.

If you have ANY reservations or questions regarding the use of this medication in your cat, call your vet and discuss it until you are satisfied with the answers. Good luck, and I hope your kitty feels better