I've a allergy with dust and rhinitis kind of symptoms like I can't sleep if I woke up at night in between and in the morning as well as soon as I woke up. Itchy, runny, blocked nose starts. Itchy throat is all the time through out the day. These symptoms are nonstop since march. Earlier it used to stay for a max. I take cetrizine and it stops for a day. I took montair lc for 5 days earlier still got relive till the time i'm having medicine. please help.