Health · Fitness & Nutrition · 1 hr ago
Overusing nasal decongestants can worsen congestion
Using nasal decongestants too often can make a blocked nose return or worsen.
The medicines can briefly reduce swelling, but repeated use may trigger a rebound effect that leads people to use them more often.
These products generally should not be used for more than three days in a row unless a doctor advises it.
Prolonged use can inflame the nasal lining, and possible side effects include raised blood pressure, changes in heartbeat, headache, insomnia and agitation.
Daily reliance on a decongestant can signal another cause, such as allergies, sinusitis, a deviated septum or nasal polyps.
A health professional can investigate the cause and recommend treatment, which may include saline rinses, other medicines or, in some cases, surgery.
People who have used these medicines for a long time may need support to stop, as congestion can temporarily worsen during withdrawal.
Frequent use of nasal decongestants can cause congestion to return or worsen, creating a cycle of repeated use.
The medicines generally should not be used for more than three consecutive days unless a doctor advises otherwise.
Prolonged use can cause medication-induced rhinitis, an inflammation of the nasal lining that can aggravate blockage.
Otolaryngologist André Alencar says daily reliance on decongestants should prompt investigation into the cause of the obstruction.
Possible causes include allergic rhinitis, sinusitis, a deviated septum, enlarged nasal turbinates and polyps.
- Who
- People who use nasal decongestants, and the health professionals advising them.
- What
- Frequent or prolonged use can worsen nasal congestion and cause medication-induced rhinitis.
- When
- The article was published on October 26, 2026. The medicines generally should not be used for more than three consecutive days without medical advice.
- Where
- Not stated
- Why
- Repeated use can cause a rebound effect: congestion returns after the medicine temporarily reduces swelling, encouraging further use.
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- Usual maximum use
- Three consecutive days without medical advice
- Active substances
- Oxymetazoline and naphazoline
- Potential adverse effects
- High blood pressure, changes in heartbeat, headache, insomnia and agitation
- Congress
- 56th Brazilian Congress of Otolaryngology and Cervico-Facial Surgery
- Congress dates
- November 19–21
- Congress location
- Curitiba
What people are saying
These medicines cause the blood vessels in the nasal lining to contract, temporarily reducing swelling and making breathing easier. But when used repeatedly and for prolonged periods, they can have the opposite effect. The patient starts to feel congested again and ends up using the product more and more often.
When a person needs to use a decongestant every day to breathe, it is important to investigate the cause. The problem is not always just the medicine. There may be an underlying condition that needs to be treated so the patient can breathe properly.
The most important thing is not to try to solve persistent blockage using only medicines that provide immediate relief. We need to identify the source of the problem and offer appropriate treatment.