Help-Cat tooth problem

Hello,
I have only written once here before but I am in need of some advice. I have a 7 year old cat, Simba, who last July had a problem with one of his teeth. I recieved a prescription for (I am going to butcher the name and I am not at home to look at it), Chlamdine, maybe, I'm not sure. I wish I were but my problem is he is not good with going into his carrier and out of the house. It is awful and probably just as hard on me too. I have an extra prescription that the vet gave me and the expiration date was for October 2006. Does anyone here think I will harm him or help him by giving it to him if this continues as it is the same thing he had before and the prescription just expired? Any advice would be greatly appreciated.

Thank you,
Laura

If the prescription was written for the problem that yo mentioned, the meds are only a few days off.

I would use them if it would make the cat feel better.

Thank you. I was concerned about using it but I think it will still be okay. I am concerned though about the potency. I am at work now. I hate worrying about him/