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2. Cetirizine - Wikipedia

   en.wikipedia.org/wiki/Cetirizine

   Cetirizine is a second-generation antihistamine used to treat allergic rhinitis (hay fever), dermatitis, and urticaria (hives). [5] It is taken by mouth. [ 6 ] Effects generally begin within thirty minutes and last for about a day. [ 6 ]

3. Levocetirizine - Wikipedia

   en.wikipedia.org/wiki/Levocetirizine

   Levocetirizine, sold under the brand name Xyzal, among others, is a second-generation antihistamine used for the treatment of allergic rhinitis (hay fever) and long-term hives of unclear cause. [3] It is less sedating than older antihistamines. [4] It is taken by mouth. [3] Common side effects include sleepiness, dry mouth, cough, vomiting, and ...

4. H1 antagonist - Wikipedia

   en.wikipedia.org/wiki/H1_antagonist

   The newer, second-generation H 1-antihistamines are far more selective for peripheral histamine H 1-receptors and have a better tolerability profile compared to the first-generation agents. The most common adverse effects noted for second-generation agents include drowsiness, fatigue, headache, nausea and dry mouth.

5. Which Allergy Medicine Is Actually Most Effective? - AOL

   www.aol.com/lifestyle/allergy-medicine-actually...

   Zyrtec works by blocking the histamine 1 receptor in your body, explains David Corry, MD, professor of allergy medicine at Baylor College of Medicine in Houston. “Histamine is a chemical that is ...

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

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

   Some people prefer Zyrtec over Allegra, but the medications work similarly to block histamine and minimize symptoms, like sneezing, runny nose, itchy eyes and hives, says Mohammad Younus, M.D., an ...

7. Antihistamine - Wikipedia

   en.wikipedia.org/wiki/Antihistamine

   Upon study of records in mouse studies associated with 40 common medications ranging from antibiotics, antihistamines, aspirin, and hydrocortisone, that for subjects with melanoma and lung cancers, fexofenadine, one of three medications, along with loratadine, and cetirizine, that target histamine receptor H1 (HRH1), demonstrated significantly ...