Medical Definition of Decongestant

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Decongestant: A drug that shrinks the swollen membranes in the nose, making it easier for a person to breathe. Decongestants can be taken orally or as nasal spray. Decongestant nasal spray should not be used for more than 5 days without a physician's recommendation. Many decongestant nasal sprays cause a worsening of symptoms (a rebound effect) when they are taken for too long and then discontinued. Decongestants should not be used by people who have high blood pressure unless they are under a physician's supervision.

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Reviewed on 12/4/2018

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