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  2. 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.

  3. Triprolidine - Wikipedia

    en.wikipedia.org/wiki/Triprolidine

    Triprolidine is an over-the-counter antihistamine with anticholinergic properties. [1] It is used to combat the symptoms associated with allergies and is sometimes combined with other cold medications designed to provide general relief for flu-like symptoms. [2] As with many antihistamines, the most common side effect is drowsiness. [1]

  4. Chlorphenamine - Wikipedia

    en.wikipedia.org/wiki/Chlorphenamine

    It is a first-generation antihistamine and works by blocking the histamine H 1 receptor. [2] Common side effects include sleepiness, restlessness, and weakness. Other side effects may include dry mouth and wheeziness. [2] Chlorpheniramine was patented in 1948 and came into medical use in 1949. [3] It is available as a generic medication and ...

  5. Meclizine - Wikipedia

    en.wikipedia.org/wiki/Meclizine

    It is believed to work in part by anticholinergic and antihistamine mechanisms. [3] Meclizine was patented in 1951 and came into medical use in 1953. [5] It is available as a generic medication and often over the counter. [3] [6] In 2022, it was the 129th most commonly prescribed medication in the United States, with more than 4 million ...

  6. 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]

  7. Mepyramine - Wikipedia

    en.wikipedia.org/wiki/Mepyramine

    It is used in over-the-counter combination products to treat the common cold and menstrual symptoms such as Midol Complete. [7] It is also the active ingredient of the topical antihistamine creams Anthisan [8] and Neoantergan [1] sold for the treatment of insect bites, stings, and nettle rash.