Hi Rahul. I am Dr Sonia S V. I am an ENT Surgeon[Specialist in diseases of the Ear ,Nose ,Throat and Head and Neck Surgery] practicing in Bangalore ,India. Montek LC is a newer generation medication for allergies and is quite effective for Allergic rhinitis also.Fludac on the other hand is an antidepressant.Oxypur is doxyphilline and can help you with the chest symptoms.It is not advisable to take all these medicines on a long term basis without a periodic checkup with your docotor. In your case since you say sneezing is the predominant symptom we may be able to control your symptoms with minimal medications. Try to identify what triggers your sneezing such as dust. Also see if there are allergens in your home or work environment such as old books, old mattresses and old pillows, woolen blankets, carpets etc. Visit an ENT specialist in your locality .Breathing exercises and steam on a regular basis are also helpful All the best Dr Sonia Suprabha Venugopal Consultant ENT Surgeon , Head & Neck Specialist,Bangalore Website:http://drsoniasv.webs.com