Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.
A decongestant is a medicine used to relieve nasal stuffiness and sinus pressure. It works by narrowing swollen blood vessels in the nasal passages, which can reduce congestion. Decongestants can come as tablets, liquids, nasal sprays, or drops. They relieve symptoms but do not treat the cause of a cold, allergy, or sinus infection.
read more about decongestant ...Congestion happens when blood vessels in the nasal lining swell and make the passages feel blocked. Decongestants shrink those swollen blood vessels, which can open the nasal airway. Oral decongestants work throughout the body, while nasal sprays act more directly in the nose. The effect depends on the ingredient, dose, and form used.
Decongestants are used for stuffy nose from colds, allergies, hay fever, or sinus pressure. They can help with temporary nasal blockage when mucus and swelling make breathing through the nose difficult. Oral pseudoephedrine is a common decongestant, while oral phenylephrine has had effectiveness concerns and FDA proposed removal from the OTC nasal decongestant monograph. Nasal spray decongestants can work quickly but are meant for short-term use.
Common decongestant ingredients include pseudoephedrine, phenylephrine, oxymetazoline, xylometazoline, and naphazoline. Pseudoephedrine is sold behind the pharmacy counter in the United States because of purchase restrictions. Oxymetazoline and xylometazoline are nasal spray decongestants. Some cold and allergy products combine decongestants with antihistamines, cough medicines, or pain relievers.
Decongestants can cause nervousness, trouble sleeping, fast heartbeat, dizziness, dry mouth, or higher blood pressure. People with high blood pressure, heart disease, thyroid disease, glaucoma, prostate problems, or certain medicine interactions should ask a clinician or pharmacist before use. Nasal spray decongestants can cause rebound congestion if used longer than directed. Seek care for chest pain, severe headache, breathing trouble, very fast heartbeat, or symptoms that worsen.
No, decongestants do not cure colds or shorten the illness. They can temporarily relieve stuffy nose and sinus pressure.
Yes, some decongestants can raise blood pressure or affect heart rhythm. People with heart or blood pressure conditions should ask a clinician before using them.
Many nasal spray decongestants are meant for only a few days of use. Longer use can cause rebound congestion, where the nose feels more blocked after the medicine wears off.
No, pseudoephedrine and phenylephrine are different decongestants. Oral phenylephrine has had effectiveness concerns for nasal congestion, while pseudoephedrine is kept behind the pharmacy counter in the United States.
Nasal Decongestant for Stuffy Nose Remedy. Cleveland Clinic. https://my.clevelandclinic.org/health/drugs/24923-nasal-decongestant. Date Accessed June 3, 2026.
Pseudoephedrine: MedlinePlus Drug Information. MedlinePlus. https://medlineplus.gov/druginfo/meds/a682619.html. Date Accessed June 3, 2026.
Phenylephrine: MedlinePlus Drug Information. MedlinePlus. https://medlineplus.gov/druginfo/meds/a606008.html. Date Accessed June 3, 2026.
Stuffy or Runny Nose - Adult. MedlinePlus Medical Encyclopedia. https://medlineplus.gov/ency/article/003049.htm. Date Accessed June 3, 2026.
Key Information about Nonprescription, Over-the-Counter (OTC), Oral Phenylephrine. U.S. Food & Drug Administration. https://www.fda.gov/drugs/understanding-over-counter-medicines/key-information-about-nonprescription-over-counter-otc-oral-phenylephrine. Date Accessed June 3, 2026.