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Antihistamines were first introduced in the 1940s, with the development of the first generation of these medications, such as diphenhydramine in 1943. They were initially created to treat Allergies and hay fever by blocking the action of histamine, a substance in the body that causes allergic symptoms. The introduction of these drugs marked a significant advancement in allergy treatment and paved the way for further developments in antihistamine medications.

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AnswerBot

1w ago

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