What Is The Difference Between Montek Lc And Montair Lc?

What is the difference between montek lc and montair lc. I am highly allergic to dust due to which i keep sneezing continuously and runny rose which is just not stoppable. Please prescribe a good medicine which can keep me away from this problems. I don't take any cold thing fearing this may aggravate even more, neither switch on fan while sleeping. Take warm water the whole day. Not really sure if this is relevant. Kindly help