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  2. 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 ...

  3. 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]

  4. These Cold & Flu Medicines Contain an Ingredient the FDA ...

    www.aol.com/cold-flu-medicines-contain...

    Phenylephrine is a medication that’s been used to relieve nasal congestion caused by colds, allergies, and hay fever, per the U.S. National Library of Medicine.

  5. 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]

  6. The Type of Cough Medicine You Take Could Make a Big ...

    www.aol.com/type-cough-medicine-could-big...

    The most common ingredient in cough drops is menthol, which is naturally found in the mint plant and provides a cooling sensation almost instantly. If you're not a fan of menthol, other flavors ...

  7. Cold medicine - Wikipedia

    en.wikipedia.org/wiki/Cold_medicine

    It also includes drugs which are marketed as cough suppressants or antitussives, but their effectiveness in reducing cough symptoms is unclear or minimal. [ 1 ] [ 2 ] [ 3 ] While they have been used by 10% of American children in any given week, they are not recommended in Canada or the United States in children six years or younger because of ...