Antihistamines can help treat many symptoms and conditions. They block a chemical called histamines in the body, and may also slow down the activity in the central nervous system. In this video, learn how antihistamines work and what health issues they can treat.
References
American College of Allergy, Asthma & Immunology. (2017). Seasonal allergies.
Farzam, K., et al. (2023). Antihistamines. StatPearls.
Thangam, E. B., et al. (2018). The role of histamine and histamine receptors in mast cell-mediated allergy and inflammation: The hunt for new therapeutic targets. Frontiers in Immunology.
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Written by:
Lauren Smith, MALauren Smith, MA, has worked in health journalism since 2017. Before joining GoodRx, she was the senior health editor and writer for HealthiNation.

Reviewed by:
Alexandra Schwarz, MDAlexandra Schwarz, MD, is a board-eligible sleep medicine physician and a board-certified family medicine physician. She is a member of both the AASM and the ABFM.
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