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2. Anti-allergic agent - Wikipedia

   en.wikipedia.org/wiki/Anti-allergic_agent

   Example of a H-1 antihistamine (Levocetirizine) Side effects. Side effects generally exist more in first-generation antihistamines, for example drowsiness, blurred vision and dry mouth. Other common side effects for all generations include gastrointestinal side effects, headaches and tiredness. [9]

3. Bilastine - Wikipedia

   en.wikipedia.org/wiki/Bilastine

   Bilastine is an antihistamine medication used to treat hives (), allergic rhinitis and itchy inflamed eyes (allergic conjunctivitis) caused by an allergy. [6] It is a second-generation antihistamine and takes effect by selectively inhibiting the histamine H 1 receptor, preventing these allergic reactions. [7]

4. Doxylamine - Wikipedia

   en.wikipedia.org/wiki/Doxylamine

   As an antihistamine, doxylamine is an inverse agonist of the histamine H 1 receptor. As a first-generation antihistamine, it typically crosses the blood–brain barrier into the brain, thereby producing a suite of sedative and hypnotic effects that are mediated by the central nervous system. (N.b.:

5. Rupatadine - Wikipedia

   en.wikipedia.org/wiki/Rupatadine

   Rupatadine is a non-sedating antihistamine. However, as in other non sedating second-generation antihistamines, the most common side effects in controlled clinical studies were somnolence , headaches and fatigue .

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. Loratadine - Wikipedia

   en.wikipedia.org/wiki/Loratadine

   Serious side effects are rare and include allergic reactions, seizures, and liver problems. [6] Use during pregnancy appears to be safe but has not been well studied. [7] It is not recommended in children less than two years old. [6] It is in the second-generation antihistamine family of medications. [5]

8. Ketotifen - Wikipedia

   en.wikipedia.org/wiki/Ketotifen

   Ketotifen is an antihistamine medication and a mast cell stabilizer used to treat allergic conditions such as conjunctivitis, asthma, and urticaria (hives).Ketotifen is available in ophthalmic (eye drops or drug-eluting contact lenses) and oral (tablets or syrup) forms: the ophthalmic form relieves eye itchiness and irritation associated with seasonal allergies, while the oral form helps ...

9. Hydroxyzine - Wikipedia

   en.wikipedia.org/wiki/Hydroxyzine

   Hydroxyzine, sold under the brand names Atarax and Vistaril among others, is an antihistamine medication. [8] It is used in the treatment of itchiness, anxiety, insomnia, and nausea (including that due to motion sickness). [8] It is used either by mouth or injection into a muscle. [8] Hydroxyzine works by blocking the effects of histamine. [9]