Definition of Nasal decongestant

Nasal decongestant: A drug that shrinks the swollen membranes in the nose, making it easier to breath. Decongestants can be taken orally or by nasal drops or spray. Nasal decongestants should not be used for more than five days in a row without the doctor's consent, and then usually only when accompanied by a nasal steroid. When nasal decongestants are used for a long time and then discontinued, symptoms often worsen (a rebound effect) because the tissues become dependent on the medication.

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