I have a swollen face (allergic reaction to pollen, dander etc). i take cetrizine and beclometasone (nasal spray). how long before it works?

Hours to days: Those medications can start working within an hour or so, but with your symptoms of getting facial swelling from such an allergic reaction, it may take days before the "puffiness" from the allergies goes down. If no resolution, see an allergist. Best wishes.

Don't know: If the airborne allergens are indeed causing your facial swelling and your swelling has not responded to cetirizine, youmay have to wait until after the exposure has stopped. If the problem is severe and avoidance impossible, a short course of Prednisone may be necessary to tie you over.