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  2. Cetirizine - Wikipedia

    en.wikipedia.org/wiki/Cetirizine

    Because the symptoms of itching and redness in these conditions are caused by histamine acting on the H 1 receptor, blocking those receptors temporarily relieves those symptoms. [17] Cetirizine is also commonly prescribed to treat acute and (in particular cases) chronic urticaria (hives), more efficiently than any other second-generation ...

  3. H1 antagonist - Wikipedia

    en.wikipedia.org/wiki/H1_antagonist

    These agents also commonly have action at α-adrenergic receptors and/or 5-HT receptors. This lack of receptor selectivity is the basis of the poor tolerability profile of some of these agents, especially when compared with the second-generation H 1-antihistamines. Patient response and occurrence of adverse drug reactions vary greatly between ...

  4. Histamine receptor - Wikipedia

    en.wikipedia.org/wiki/Histamine_receptor

    H1 antagonists, commonly known as antihistamines, are used to alleviate symptoms of allergies and allergic reactions. [ 3 ] H 2 receptor H2 Receptors: Found mainly in the stomach lining (parietal cells), H2 receptors regulate gastric acid secretion by stimulating the production of hydrochloric acid.

  5. 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 ...

  6. Histamine H1 receptor - Wikipedia

    en.wikipedia.org/wiki/Histamine_H1_receptor

    The H 1 receptor is a histamine receptor belonging to the family of rhodopsin-like G-protein-coupled receptors. This receptor is activated by the biogenic amine histamine . It is expressed in smooth muscles , on vascular endothelial cells , in the heart, and in the central nervous system .

  7. Anti-allergic agent - Wikipedia

    en.wikipedia.org/wiki/Anti-allergic_agent

    Zyrtec-D, an example of combination therapy. Combination therapy with antihistamines. Antihistamines and decongestants can be used as a combination to treat nasal congestion, runny nose, and sneezing symptoms caused by common cold and hay fever. Some examples include: Pseudoephedrine + Loratadine (Claritin-D®) Pseudoephedrine + Cetirizine

  8. Levocetirizine - Wikipedia

    en.wikipedia.org/wiki/Levocetirizine

    It acts as an inverse agonist that decreases activity at histamine H1 receptors. This in turn prevents the release of other allergy chemicals and increases the blood supply to the area, providing relief from the typical symptoms of hay fever. Levocetirizine, (R)-(-)-cetirizine, is essentially a chiral switch of (±)-cetirizine.

  9. Benadryl - Wikipedia

    en.wikipedia.org/wiki/Benadryl

    Benadryl is a brand of various antihistamine medications used to stop allergies, whose content varies in different countries, but which includes some combination of diphenhydramine, acrivastine, and/or cetirizine. It is sold by Kenvue and is used to relieve allergy symptoms such as sneezing, itching, runny nose, rash, and hives. [1]

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