Is there an allergy medicine that doesn't cause yeast infections?

Hi Hallie... You didn't say what kind of medicine you were taking that you believe is causing your yeast infections. The most common ones are: antibiotics, high estrogen contraceptives, immunosuppressant drugs, and steroids. I couldn't find anything in the literature that antihistamines, the most common allergy medicine, cause yeast infections. I would encourage you to talk with your doctor about the best approaches. However, you can also try a nasal rinse, which flushes out mucus and allergens from your nasal passages. You can buy one at your local drugstore or even make your own, with the recipe here: http://altmedicine.about.com/cs/allergiesasthma/a/SinusIrrigation.htm