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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] The degree of benefit is similar to other antihistamines such as diphenhydramine, which is a first-generation ...

3. Levocetirizine - Wikipedia

   en.wikipedia.org/wiki/Levocetirizine

   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]

4. 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]

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

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

   Side effects of Zyrtec. Zyrtec is a widely available medication that can work quickly. “In the average patient, Zyrtec works at its maximum effect slightly faster — about 45 minutes ...

6. H1 antagonist - Wikipedia

   en.wikipedia.org/wiki/H1_antagonist

   1. antagonist. H1 antagonists, also called H1 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 ...

7. Bilastine - Wikipedia

   en.wikipedia.org/wiki/Bilastine

   Bilastine is an antihistamine medication used to treat hives (), allergic rhinitis and itchy inflamed eyes (allergic conjunctivitis) caused by an allergy. [6] It is a second-generation antihistamine and takes effect by selectively inhibiting the histamine H 1 receptor, preventing these allergic reactions. [7]