I've been using Advantage Multi on my 2 yr old cat for about a year now, and it has been working very well on him. I especially like the heartworm protection because mosquitos are very common in my area, and my cat does go outside (I take him for walks around the yard on a leash/harness). During the course of the year I had to change vets, and kitty's current vet does not carry anything similar to Advantage Multi (I would've been happy with Revolution too). A friend of mine whose cat was also on Advantage Multi gave me a box she had left over (she had to give her cat away), but the expiration date on that reads "9/09". Since it had 4 tubes left, I asked at my current vet's office about that, and was told the tubes were still good for the next few months.
But I'm looking at each individual tube, and each has this month listed as the expiration date. Can I still use them? I don't feel confident doing that.
Now the other problem is that my cat's new vet does not give out prescriptions for ordering online, so what can I do now to get the Advantage Multi? He's already had his flea spot treatment for this month, but is due to get his next the first week of Oct. Is a prescription always required?