text: allergies? i have cat allergy but i would really really like to own a cat; is there any treatment that i can take to stop that allergy? are there medications for that? am i supposed to take them all the time to keep the allergy away? i am mostly allergic to siamese cats, but all cats in general too... thanx! my s-i-l takes zyrtec for her cat allergy, and now she owns a cat.  it's an non-sedating antihistamine.