The symptoms as mentioned in your post suggest that you might be having Allergic rhinitis
Montair is Montelukast
, which is used as a maintenance therapy to relieve symptoms of seasonal allergies & asthma
So..the medicine given by your Doctor is correct...please continue them as advised.
Also antihistamine preparations like Allegra
can be taken for symptomatic relief.
Other than that...maintain adequate hydration & take a healthy balance diet.
Also make sure that you are well protected from cold, dust & other allergens.
Wishing you a good health.
Thanks & take care.