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  2. Benadryl - Wikipedia

    en.wikipedia.org/wiki/Benadryl

    Benadryl Allergy is the name of a Benadryl product found in the United States and Canada. It is an antihistamine drug used to relieve allergies. Its active ingredient is diphenhydramine, a first-generation antihistamine. It is known to be sedative, making drowsiness a common side effect.

  3. Diphenhydramine - Wikipedia

    en.wikipedia.org/wiki/Diphenhydramine

    Diphenhydramine, sold under the brand name Benadryl among others, is an antihistamine and sedative.It is a first-generation H 1-antihistamine and it works by blocking certain effects of histamine, which produces its antihistamine and sedative effects.

  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/allergy-medicine-actually-most...

    The long-acting, over-the-counter medication lasts up to 24 hours per dose, according to the Food and Drug Administration (FDA). It reaches peak concentration in your body an hour after you take ...

  6. Allergy medications may cause brain damage, increase ... - AOL

    www.aol.com/article/2016/04/19/allergy...

    Allergy medications may cause brain damage, increase dementia risk because of course they can, everything can ... If you've ever popped a Benadryl or two to sleep through a long flight (or even ...

  7. 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.

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