You could try different types of
allergy medications. Nasal sprays are very effective
with few, if any, side effects. Nasal steroids are the most common. There are also nasal antihistamines. You can also purchase an OTC mast cell stabilizer, NasalCrom. It is very effective. Lastly, if nasal drainage is the problem you can try atrovent.
Have you tried a variety of oral antihistamines. Zyrtec has very few side effects.