Channel: Speed Pharmacology

Category: Education

Tags: h2 receptor antagonistgastric acid secretiongerdallergic reactionhistamineantihistamine drugsautacoids pharmacologyantihistamine mechanism of actionantihistamine pharmacologymast cell activation disorderhistamine pharmacologygastrin secretionantihistamines pharmacologyantihistamineshistamine intoleranceh2 receptor antagonist mechanism of actionantihistaminehistamine receptorshistamine 2 receptor antagonisthistamine and antihistamine pharmacology

Description: Antihistamines are drugs that block the action of histamine. They are commonly used for the relief of allergy symptoms or for gastrointestinal conditions. This pharmacology lecture covers topics such as pathophysiology of allergic reaction, histamine and its actions, H1 and H2 histamine receptors, mast cells, parietal cells, mechanism of action of H1 and H2 antagonists. Drugs mentioned include first generation antihistamines; Brompheniramine, Chlorpheniramine, Clemastine, Cyproheptadine, Diphenhydramine, Doxylamine, Hydroxyzine, Meclizine, Promethazine; Second generation antihistamines; Cetirizine, Desloratadine, Fexofenadine, Levocetirizine, Loratadine, Azelastine, Olopatadine, Ketotifen; H2 blockers; Cimetidine, Famotidine, Nizatidine, and Ranitidine. Thanks for watching and don't forget to SUBSCRIBE, hit the LIKE button👍 and click the BELL button🔔 for future notifications!!! Like what we do? Learn how to support us on Patreon! 💪patreon.com/speedpharmacology 0:00 Pathophysiology of allergic reaction 2:00 Histamine receptors 3:41 H1 receptor blockers 7:14 H2 receptor blockers