Decongestants: One way to relieve allergy symptoms

Key points
- Some of the medications used to treat respiratory allergy symptoms include antihistamines, decongestants, nasal sprays and eyedrops.
- Decongestants help reduce congestion in your nasal membranes by constricting the blood vessels that supply those membranes.
- Generally taken as a liquid, pill or nasal spray, they may be used in conjunction with an antihistamine or alone to treat nasal swelling related to allergies.
- Decongestants are available over-the-counter (OTC) and by prescription.
Some of the medications used to treat respiratory allergy symptoms include antihistamines, decongestants, nasal sprays and eyedrops. This article focuses on decongestants.
Decongestants help reduce congestion in your nasal membranes by constricting the blood vessels that supply those membranes. Generally taken as a liquid, pill or nasal spray, they may be used in conjunction with an antihistamine or alone to treat nasal swelling related to allergies.
Allergy Relief
Some of the medications used to treat respiratory allergy symptoms include antihistamines, decongestants, nasal sprays and eyedrops. What do medications do? Allegra D Allegra Claritin-D Flonase Nasacort Nasacort AQ Nasonex Patanol Zyrtec
Decongestants are available over-the-counter (OTC) and by prescription. Examples of decongestants include pseudoephedrine (Sudafed, others) and phenylephrine (Neo-Synephrine nasal spray). Short-term use of OTC decongestant nasal sprays can help briefly control swelling and congestion. However, don't use these OTC decongestant sprays for more than 3 days, as they can cause rebound congestion (rhinitis medicamentosa). In this condition, the brief period of relief is followed by membrane swelling that causes severe nasal obstruction with repeated use. Decongestant sprays are best reserved for very-short-term use to relieve temporary congestion due to a cold or sinus infection. Other side effects of decongestants can include increased blood pressure, insomnia, anxiety, and a fast, irregular, or pounding heartbeat.
Talk to your doctor or pharmacist before taking any medications.
Written and revised by
Andrey Nailor, M.D.
Our doctors write and review articles for accuracy and keep them up to date.
health.am provides general information, not medical advice. Always consult a qualified health professional about your own health.
Explore health topics
More in this topic
Lungs, Asthma & Allergies →
NewsSublingual immunotherapy shows promise as treatment for peanut allergy
Peanuts are one of the most common triggers of severe food-induced allergic reactions, which can be fatal, and the prevalence of peanut allergy is increasing. However, there is currently no clinical treatment available…
9 January 2013
NewsSmoking affects allergy-relevant stem cells
Leipzig. Environmental contaminants, such as smoking, are harmful to the human organism in relation to the occurrence of allergies. This is known. Until now, researchers had never investigated whether and to what extent…
15 November 2012
NewsSocioeconomic Status Linked to Childhood Peanut Allergy
Peanut allergies are rising among American children and one reason might be due to economic status. According to a new study presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific…