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2. It's Not in Your Head: Doctors Say Allergy Season Is Getting ...

   www.aol.com/not-head-doctors-allergy-season...

   Zyrtec contains the active ingredient cetirizine, which, according to one study, was more effective for allergy symptoms than fexofenadine, the ingredient in Allegra. RELATED: Which Works Better ...

3. Fexofenadine - Wikipedia

   en.wikipedia.org/wiki/Fexofenadine

   Fexofenadine, sold under the brand name Allegra among others, [10] is an antihistamine pharmaceutical drug used in the treatment of allergy symptoms, such as hay fever and urticaria. [ 11 ] Therapeutically, fexofenadine is a selective peripheral H 1 blocker .

4. You May Want To Skip Allergy Meds With Decongestant In The ...

   www.aol.com/may-want-skip-allergy-meds-155300887...

   Zyrtec, a.k.a. cetirizine hydrochloride, offers up relief in the form of a tiny, easy-to-swallow pill backed by Dr. Parikh. The 24-hour histamine with little to no side effects is said to work ...

5. What decongestants work? Here are some alternatives to ... - AOL

   www.aol.com/news/decongestants-alternatives...

   Instead, she recommends oral antihistamines like Zyrtec, Allegra and Claritin. The medications are commonly used for allergies and hives, but can also be used to get rid of nasal congestion. They ...

6. H1 antagonist - Wikipedia

   en.wikipedia.org/wiki/H1_antagonist

   H 1 antagonists, also called H 1 blockers, are a class of medications that block the action of histamine at the H 1 receptor, helping to relieve allergic reactions.Agents where the main therapeutic effect is mediated by negative modulation of histamine receptors are termed antihistamines; other agents may have antihistaminergic action but are not true antihistamines.

7. Antihistamine - Wikipedia

   en.wikipedia.org/wiki/Antihistamine

   Antihistamines are drugs which treat allergic rhinitis, common cold, influenza, and other allergies. [1] Typically, people take antihistamines as an inexpensive, generic (not patented) drug that can be bought without a prescription and provides relief from nasal congestion, sneezing, or hives caused by pollen, dust mites, or animal allergy with few side effects. [1]