you haven't been on one medication long enough for it to get into your system to work. diphenhydramine the active ingredient in antihistamines like benadryl would be a last resort due to the side effects that include a "hangover" feeling dry mouth constipation and dizziness. do you tune into your weather forecast to check the pollen counts? if they are high you will continue to have your symptoms. stay on one product during the allergy season and if after a week or so you do not seem to be getting better see your doctor or health care provider; you may need prescription medication. this is an example of something you can talk to your pharmacist about.
i have tried claritin and today took the last of zyrtec. i still have allergy symptoms. should i try benadryl?