Xylometazoline

What xylometazoline hydrochloride is and how it works

Xylometazoline is an over-the-counter nasal decongestant spray or drops that narrows the blood vessels in the lining of the nose, reducing swelling and congestion within minutes, with effects lasting several hours. (2) (1)

Xylometazoline works quickly for a blocked nose from a cold, hay fever, allergic rhinitis, or sinusitis, but using it for longer than the recommended number of days on the pack can cause your congestion to come back worse than before (a real, well-documented rebound effect called rhinitis medicamentosa). It is intended for short-term use only, and different products (adult-strength sprays versus lower-strength children's drops) have different maximum-use periods on their own labelling.

Mechanism of action: how xylometazoline hydrochloride works

Xylometazoline is an imidazoline-derivative alpha-adrenergic agonist that acts directly on alpha receptors in the walls of nasal mucosal blood vessels, causing vasoconstriction that reduces blood flow, mucosal swelling, and mucus production, producing decongestion within minutes that lasts several hours. (1) (2)

What xylometazoline hydrochloride is used for

Before taking xylometazoline hydrochloride

Do not take / not appropriate for

• Do not use if you have a known hypersensitivity (allergic) reaction to xylometazoline or any of the product's other ingredients. (all countries) (3)
• Do not use in children younger than the specific product's stated minimum age (varies by product -- e.g. under 12 years for the standard 0.1% adult spray, under 6 years for the 0.05% child drops), and never in children under 2 years of age under any xylometazoline product. (all countries) (2) (3) (7)
• Do not use if you have narrow-angle glaucoma, phaeochromocytoma (an adrenal gland tumour), or are currently taking (or have taken within the last 2 weeks) a monoamine oxidase inhibitor (MAOI). (United Kingdom) (2)

Tell your clinician about

• Heart disease, high blood pressure, or an overactive thyroid, since xylometazoline's vasoconstrictor action can affect these conditions.
• Diabetes.
• Difficulty urinating due to an enlarged prostate (prostatic hypertrophy) or any diagnosed prostatic hypertrophy, since urinary retention is a listed contraindication concern in the UK product information.
• All other medicines, particularly MAOIs or tricyclic/tetracyclic antidepressants, which can interact to raise blood pressure.
• Pregnancy or breastfeeding, since the UK product information advises avoiding use in pregnancy and using only under medical guidance while breastfeeding.

How to take xylometazoline hydrochloride

• Use only in the nose, as a spray or drops, following the specific product's instructions -- different xylometazoline products (adult sprays, lower-strength children's drops) have different concentrations and dosing schedules.
• Do not use more often than every 8 to 10 hours.
• Do not exceed the maximum number of days of use stated on your specific product's pack -- this genuinely differs by product (as short as 3 days on some OTC labels, up to 7 consecutive days for some adult sprays); using it for longer risks rebound congestion (rhinitis medicamentosa).
• If symptoms persist beyond the recommended duration, stop use and see a doctor rather than continuing or increasing use yourself.

Procedures and treatment changes

Tell the treating team before surgery, procedures, or any medicine change. Do not alter treatment without the responsible clinician. (1) (2) (3) (4) (5) (6) (7)

Missed dose

Xylometazoline is used as needed for symptom relief rather than on a fixed schedule, so there is no specific missed-dose procedure. Simply use your next dose when needed, without doubling up, and do not exceed the maximum frequency (every 8-10 hours) or the maximum number of days stated on your product's pack.

Overdose

If you or a child may have swallowed or used significantly more xylometazoline than directed, contact a doctor or Poison Control Center right away, or seek emergency care -- the US OTC label specifically directs this. Keep xylometazoline products out of reach of children, since accidental ingestion in young children is a recognised risk with this class of medicine. (1)

Side effects

Side effects and their urgency vary; report severe, persistent, or concerning symptoms.

Serious warnings

Interactions

• Monoamine oxidase inhibitors (MAOIs), including within 2 weeks of stopping one, may interact with xylometazoline to increase blood pressure. (2)
• Tricyclic or tetracyclic antidepressants may interact with xylometazoline to increase blood pressure. (2)

Pregnancy, breastfeeding, kidney/liver function, age

Monitoring

Before starting

• Check your specific product's minimum age and maximum-duration-of-use instructions, since these differ by product and strength.
• Review other medicines for MAOI/tricyclic-antidepressant interactions.

During treatment

• Track how many consecutive days you have used the product, and stop at the maximum stated on the pack.
• Watch for congestion returning or worsening after stopping, which can indicate rebound congestion (rhinitis medicamentosa).

Storage

Store at room temperature, out of reach and sight of children, and follow the specific product's storage instructions on the pack.

Frequently asked questions

References

1. SINOSIL NASAL DECONGESTANT - xylometazoline hcl sprayDailyMed (U.S. National Library of Medicine) -- OTC monograph-final drug label · United States · accessed 2026-07-30 · source 1
2. Otrivine Congestion Relief 0.1% Nasal Spray with Khone Spray -- Summary of Product Characteristicselectronic medicines compendium (emc), United Kingdom -- Haleon UK Trading Limited · United Kingdom · accessed 2026-07-30 · source 2
3. Otrivine Child Nasal Drops -- Summary of Product Characteristicselectronic medicines compendium (emc), United Kingdom -- Haleon UK Trading Limited · United Kingdom · accessed 2026-07-30 · source 3
4. Dexpanthenol/xylometazoline -- list of nationally authorised medicinal products (PSUSA/00010030/202005)European Medicines Agency (EMA) -- Periodic Safety Update Report Single Assessment (PSUSA) list of nationally authorised medicinal products · European Union · accessed 2026-07-30 · source 4
5. OTRIVIN COMPLETE RELIEF -- DIN 02331403Health Canada Drug Product Database (DPD) · Canada · accessed 2026-07-30 · source 5
6. OTRIVIN ADULT NASAL SPRAY and OTRIVIN JUNIOR NASAL SPRAY -- ARTG registrationsTherapeutic Goods Administration (TGA), Australia -- Australian Register of Therapeutic Goods (ARTG) entries · Australia · accessed 2026-07-30 · source 6
7. Otrivin Adult Nasal Spray / Otrivin Plus Nasal Spray -- New Zealand retail listings; Medsafe cough-and-cold safety alertMultiple licensed New Zealand community pharmacy retailers (Unichem Pharmacy, Life Pharmacy) plus Medsafe's own cough-and-cold safety-alert page referencing registered Otrivin xylometazoline formulations · New Zealand · accessed 2026-07-30 · source 7

Brand names by country

Single-ingredient xylometazoline hydrochloride names are shown separately by country. Product availability, strengths, and supply rules can change; combination products are not included here.

Priority countries