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Dictionary · Drug

decongestant

A drug that shrinks swollen blood vessels in the nose to relieve a stuffy nose.

dee-kun-JES-tunt noun

What it means

A drug that narrows blood vessels in the lining of the nose and sinuses. Examples are pseudoephedrinesoo-doh-eh-FED-rinA decongestant taken by mouth that shrinks swollen blood vessels in the nose to ease a stuffy nose.Full entry and phenylephrine by mouth, and oxymetazoline nasal spray. Because they narrow blood vessels elsewhere too, they can raise blood pressure and heart rate and cause nervousness and trouble sleeping.

For the nurse

Teach clients with high blood pressure, heart disease or an enlarged prostate to ask before using one. Nasal sprays should not be used for more than 3 days, since longer use causes rebound congestion.

At a glance

Drug classdecongestant (alpha-adrenergic agonist)
Also writtendecongestants, nasal decongestant, nasal decongestants

Related terms

antihistamine

A drug that blocks the effects of histamine, used mostly for allergy symptoms.

pseudoephedrine

A decongestant taken by mouth that shrinks swollen blood vessels in the nose to ease a stuffy nose.

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