Blocked nose (nasal congestion)
A blocked nose, or nasal congestion, happens when the lining of the nose swells, making it hard to breathe through it. It is most often caused by a cold, flu, hay fever or sinus infection. It usually settles by itself within days to a couple of weeks. Decongestant drops and sprays can give short relief, but must not be used for more than a few days.
Pharmacist review in progress. This page is based on the sources listed below and is being checked by our registered pharmacist.
Medicines used for Blocked nose (nasal congestion)
These active ingredients are in medicines whose approved uses include Blocked nose (nasal congestion). Brands are listed A to Z, not ranked. A doctor or pharmacist decides which medicine is right for you.
Xylometazoline
- Otrivin · 0.1% w/v (VERIFY on pack) nasal drops or nasal spray (verify which on pack)
Common questions
How long can I use a decongestant nose spray?
Not more than 5 consecutive days, according to the UK regulator MHRA for xylometazoline and oxymetazoline sprays. Longer use can bring on rebound congestion. If your nose is still blocked after five days, talk to a doctor or pharmacist about stopping and other options.
When should I see a doctor for a blocked nose?
See a doctor if it lasts more than about 3 weeks, keeps coming back, comes with a high fever, severe facial pain, or blood-stained discharge, or if only one side is blocked for long. Do not keep using a decongestant spray to cope with it.
Sources
- Recommended use of some nasal decongestant sprays limited to five days by UK regulator. GOV.UK (MHRA), 30 April 2026
- Otrivine Adult Nasal Drops (xylometazoline hydrochloride 0.1% w/v): patient information leaflet (revised 2/2024). Haleon UK, via the electronic medicines compendium (UK)