What I meant is antihistamines are what I usually use to control allergies (I made the assumption that was the issue). Sometimes I also use Nasonex, but it really dries out my sinus passages. I guess I was thinking of my situation. In any case, Nasonex doesn't affect my balance, cloud judgement, etc. Clariten and other antihistamines that don't cross the blood/brain barrier have been recommended by my AME in the past and there was an FAA web site that listed antihistamines to consider. In each case, they recommend trying it a few days before flying to see how it affects you. Sorry if the Nasonex was for another issue.
Best,
Dave