Would an air purifier be good for allergy problems?

I have been sneezing, having watery, itchy, red eyes, stuffy nose, and running nose for weeks now. It goes away most of the time when I’m in school but when I come home, all those symptoms starts happening. It could be the air that I’m breathing at home. Would an air purifier help at all? I’m also taking a generic brand of Claritin-D which doesn’t seem to help that much.