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Zyrtec contains the active ingredient cetirizine, which, according to one study, was more effective for allergy symptoms than fexofenadine, the ingredient in Allegra. RELATED: Which Works Better ...
Fexofenadine, sold under the brand name Allegra among others, [10] is an antihistamine pharmaceutical drug used in the treatment of allergy symptoms, such as hay fever and urticaria. [ 11 ] Therapeutically, fexofenadine is a selective peripheral H 1 blocker .
Instead, she recommends oral antihistamines like Zyrtec, Allegra and Claritin. The medications are commonly used for allergies and hives, but can also be used to get rid of nasal congestion. They ...
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.
Among second-generation antihistamines, cetirizine is more likely than fexofenadine and loratadine to cause drowsiness. [8] Use in pregnancy appears safe, but use during breastfeeding is not recommended. [9] The medication works by blocking histamine H 1 receptors, mostly outside the brain. [6] Cetirizine can be used for paediatric patients.
Zyrtec, a.k.a. cetirizine hydrochloride, offers up relief in the form of a tiny, easy-to-swallow pill backed by Dr. Parikh. The 24-hour histamine with little to no side effects is said to work ...
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