Frequent running nose when I get up early in the morning, probably due to dust and sometime if I take any thing chilled or if I am continuously in air conditioned room. Have tried nasal spray, montelukast tab, Allegra tab, etc. It relieves me only if i take it regularly. But now I have cetrizine tab every alternate day to avoid my early morning problem or whenever I m exposed to heavy dust. If possible please let me know some medicine which can cure this problem completely. Thank you.