Loratadine

Pharmacology of Loratadine

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Pharmacology of Loratadine

Introduction Loratadine is a widely used second-generation antihistamine renowned for its effectiveness in alleviating allergy symptoms such as sneezing, runny nose, and itchy or watery eyes. By selectively blocking peripheral histamine H₁-receptors, loratadine significantly diminishes the effects of endogenous histamine, thus relieving the hallmark symptoms of allergic rhinitis, urticaria, and other hypersensitivity ailments. Thanks to its preferential targeting … Read more

Pharmacology of Histamine and Antihistamines

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antihistamine

Overview Histamine is a ubiquitous biogenic amine that influences vascular tone and permeability, sensory nerve activity (especially itch), airway smooth muscle, gastric acid secretion, and central nervous system arousal. Among its diverse receptor subtypes (H1–H4), the H1 receptor is the dominant mediator of the hallmark symptoms of immediate-type (type I) allergic reactions in the skin … Read more