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  2. Antihistamine - Wikipedia

    en.wikipedia.org/wiki/Antihistamine

    Antihistamines that target the histamine H 1 -receptor are used to treat allergic reactions in the nose (e.g., itching, runny nose, and sneezing). In addition, they may be used to treat insomnia, motion sickness, or vertigo caused by problems with the inner ear. H 2 -antihistamines bind to histamine H 2 receptors in the upper gastrointestinal ...

  3. Doxylamine - Wikipedia

    en.wikipedia.org/wiki/Doxylamine

    Doxylamine and other first-generation antihistamines are the most widely used sleep medications in the world. [6] Typical side effects of doxylamine (at recommended doses) include dizziness, drowsiness, grogginess, and dry mouth, among others. [7][4] As an antihistamine, doxylamine is an inverse agonist of the histamine H 1 receptor.

  4. Diphenhydramine - Wikipedia

    en.wikipedia.org/wiki/Diphenhydramine

    Diphenhydramine (DPH) is an antihistamine and sedative first developed by George Rieveschl and put into commercial use in 1946. [11][12] it is available as a generic medication, [13] and also sold under the brand name Benadryl, among others. [13]

  5. Fexofenadine - Wikipedia

    en.wikipedia.org/wiki/Fexofenadine

    Therapeutically, fexofenadine is a selective peripheral H 1 blocker. It is classified as a second-generation antihistamine because it is less able to pass the blood–brain barrier and cause sedation, compared to first-generation antihistamines. [12][13] It was patented in 1979 and came into medical use in 1996. [14]

  6. Clemastine - Wikipedia

    en.wikipedia.org/wiki/Clemastine

    Clemastine is an antihistamine with anticholinergic and sedative effects. Antihistamines competitively bind to histamine receptor sites, thus reducing the neurotransmitter's effects. [9] Effects of histamine (which are countered by antihistamines) include: Increased capillary permeability. Increased capillary dilatation. Edema (i.e., swelling)

  7. 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 ...

  8. Loratadine - Wikipedia

    en.wikipedia.org/wiki/Loratadine

    Loratadine, sold under the brand name Claritin among others, is a medication used to treat allergies. [5] This includes allergic rhinitis (hay fever) and hives. [5] It is also available in drug combinations such as loratadine/pseudoephedrine, in which it is combined with pseudoephedrine, a nasal decongestant. [5] It is taken orally.

  9. Chlorphenamine - Wikipedia

    en.wikipedia.org/wiki/Chlorphenamine

    Chlorphenamine (CP, CPM), also known as chlorpheniramine, is an antihistamine used to treat the symptoms of allergic conditions such as allergic rhinitis (hay fever). [2] It is taken orally (by mouth). [2] The medication takes effect within two hours and lasts for about 4–6 hours. [2] It is a first-generation antihistamine and works by ...

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