A fast-acting nasal decongestant spray
Xylometazoline
A fast nasal decongestant spray that quickly unblocks a stuffy nose, but must not be used for more than about a week to avoid rebound congestion.
What is Xylometazoline?
Xylometazoline is a nasal spray that quickly relieves a blocked nose from a cold, sinusitis or hay fever by shrinking swollen blood vessels in the lining. It works within minutes but must not be used for more than about a week, because longer use can cause rebound congestion (rhinitis medicamentosa) that leaves the nose more blocked than before.
Education and reference only. This is a plain-language guide to Xylometazoline — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Xylometazoline is a fast-acting nasal decongestant, available over the counter as a spray (and sometimes drops). It is used for short-term relief of a blocked nose caused by colds, sinusitis or hay fever. It is a symptom reliever — it opens up the nose but does not treat the underlying cause — and is designed only for brief use.
How it works
A blocked nose is largely caused by swollen, engorged blood vessels in the lining of the nose. Xylometazoline tightens these blood vessels, which reduces the swelling and lets air flow more freely, usually within a few minutes. The effect is purely local and short-lived, which is why it gives quick relief but needs re-dosing and must not be relied on for long.
Company & origin
Originated / developed by: Originally developed by Novartis (Ciba)..
Xylometazoline is a long-established nasal decongestant that has been sold over the counter in the UK for many years.
Practical use
How to take Xylometazoline
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- Blow your nose gently first, then shake the spray if advised.
- Insert the nozzle just inside one nostril, keep your head upright and give a spray into each nostril.
- Breathe in gently as you spray, and avoid sniffing hard so it stays in the nose rather than running down the throat.
- Use only for a short course — no more than about a week — to avoid rebound congestion.
- Wipe the nozzle after use and do not share the spray, to avoid spreading infection.
Weighing it up
Advantages & disadvantages of Xylometazoline
Advantages
- Works very quickly to relieve a blocked nose.
- Available without prescription for short-term self-care.
- Acts locally, so few whole-body effects when used briefly.
Disadvantages
- Must not be used for more than about a week because of rebound congestion.
- Only relieves the blockage — it does not treat the cause.
- Not generally suitable for young children except on advice.
Practical use
Good to know
Xylometazoline is one of the fastest ways to unblock a nose, but the crucial rule is not to use it for more than about a week. With longer use the nose becomes 'used to' it and rebounds into worse congestion when it wears off — a problem called rhinitis medicamentosa — which can trap people into using more and more. It is not generally recommended for young children except on advice. For ongoing allergic blockage, a steroid nasal spray is a better long-term choice.
Who should not take it / use with caution
- Young children, unless specifically advised by a pharmacist or doctor.
- People who have already used it for longer than recommended and have rebound congestion.
- People advised to be cautious — for example with certain heart, blood-pressure or thyroid conditions — should check with a pharmacist first.
Monitoring
- How many days you have been using it — keep within about a week
- Whether the blockage is improving or rebounding
- Any palpitations or persistent symptoms, which should be reviewed
Side effects
- Brief stinging, dryness or sneezing in the nose after spraying.
- Rebound congestion if used for too long, leaving the nose more blocked.
- Occasionally a dry mouth, headache or, rarely, a fast heartbeat.
Key interactions
- Caution alongside certain antidepressants, including MAOIs — check with a pharmacist before use.
- May add to the effects of other decongestants, so avoid using several at once.
- Tell a pharmacist about heart, blood-pressure or thyroid medicines before using it.
Available as: Nasal spray; nasal drops are also available, including formulations intended for children.
Answers
Xylometazoline: frequently asked questions
How long can I use xylometazoline?
Only for a short course — generally no more than about a week. Using it for longer can cause rebound congestion (rhinitis medicamentosa), where the nose becomes more blocked when the spray wears off, making the problem worse.
What is rebound congestion?
It is when the nose becomes increasingly blocked because it has got used to a decongestant spray. The blockage returns, often worse, as soon as the spray wears off, tempting people to use more. Stopping the spray lets the nose recover, though it can be stuffy for a while.
Can my child use it?
Decongestant sprays are not generally recommended for young children except on the advice of a pharmacist or doctor. Always check first and use any child-specific product exactly as directed.
What should I use instead for long-term hay fever?
For ongoing allergic nasal symptoms, a steroid nasal spray or an antihistamine is a better long-term option, as they can be used for longer without rebound. A pharmacist can help you choose.
What is the difference between xylometazoline and Otrivine?
They are the same medicine — xylometazoline is the active-ingredient name and Otrivine is a brand. Both contain the same decongestant.
The wider class
About Nasal decongestants
Xylometazoline belongs to the nasal decongestants class. For how the class as a whole works, its shared safety principles and monitoring, see the full guide.
Browse by body system
Authoritative sources
- BNF: Xylometazoline.
- NICE CKS: Decongestants.
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