Hi, Danaw.
We have an interesting article on how antihistamines work coming up in the March/April 2008 issue of
James Hubbard's My Family Doctor.
Claritin is one of the nonsedating antihistamines that you buy over-the-counter. There are others, and some you can get by subscription only. The only way to find which works for you is trial and error. Benadryl (diphenhydramine), Tavist and Chlortrimeton work well also, but have a tendency to cause drowsiness.
The main thing is to try to find out what you are allergic to, and avoid it. If it is a plant pollen then find out when it at its worst and try to stay indoors. Usually your local weather will provide info.
Www.pollen.com is a good web site for this.
Other suggestions are:
Stay indoors in early morning and dusk.
Keep your windows shut.
Try nasal irrigation. (We have an article on that in the March/April issue, too.)
Start the antihistamine a week or two before allergy season and take it regularly (not as needed).
If the above fails, check with your primary care provider for prescription alternatives, including nasal spray steroids.
Consider seeing an allergist for allergy testing and shots to decrease your allergy reaction severity. These usually take several months to work effectively, but really help some people significantly.
We'll be posting a couple of articles we've done on allergies in the next few days. I'll post in this forum when they go online.
James Hubbard, M.D., M.P.H.
Publisher, James Hubbard's My Family Doctor