Hello, Thank you for writing to us. As you now already know that you have severe pollen allergy, you must also know if that is tree pollen or grass pollen allergy. Depending on which part of the world you live, there are specific seasons when these pollen counts peak in the environment. You need to start taking long-acting antihistamines like Allegra 180mg morning and levocetirizine 5mg in the evening followed by Montelukast 10mg at night. Nasonex nasal spray 1 spray per nostril once daily and/or asthalin inhaler when required. This should be started 1 month before the pollen season and continued throughout the season. 1 in 5 people will fail the above optimal medical therapy and will need immunotherapy. This therapy involves giving low doses of the allergen either in the form of injections or drops and started 2 months before the season. Some practitioners lower the amount while in the season, while some do not. This lasts between 3 to 5 years. I hope this helps. Best Wishes.