Pharmacology of Diphenhydramine
Introduction Diphenhydramine is a prototypical first-generation antihistamine with a long history of clinical use for allergic reactions, insomnia, motion sickness, and a variety of off-label applications. Its popularity in both prescription and over-the-counter preparations is a testament to its versatility, but its significant sedative and anticholinergic properties necessitate a deep understanding for safe and effective use. … Read more
