Originally Posted by Pat & Alix
First, it depends on the particular medication, they have different rates of breakdown. If it's labeled discard after 14 days you should do so, as the medication is no longer effective.
The second thing is if you don't know that what you are treating is susceptible to the medication you've decided to use, you are not doing your cat any favors. Cats like humans can build a resistence to antibiotics I believe, so they need to be used only when necessary, and the right antibiotic needs to be used for what's wrong. It's really best to see your vet when you feel a kitty is ill.
Yes I know this and I don't do it all the time. At the shelter I work at, I am used to observing what is wrong with the cats and knowing what meds they need for it. We determine what is wrong with the cats and med them ourselves. When a cat gets a runny nose and is sneezing, we don't rush them to the vet, we know what to give them for it(or we ask the boss to be sure). Unless it gets bad then obviouslly its off to an actual vet for them. (we also have test and things too to find out if they have UTI's and stuff like that so they can get the right meds)
Usually when one of my cats or my foster cats gets sick, I just go in and say my cat has a runny nose and is sneezing, I need some meds and they tell me what they need or give it to me. I could take them to a vet everytime, but usually it lasts a couple days and is gone. Sometimes I don't give them meds at all, just make sure everything else is going ok with them and it clears up on its own. It helps too that they aren't in a stuffy shelter coming into contact with other strange sick cats. There colds clear up faster at home