Mometasone is the active ingredient of Nasonex nasal spray (Nappi
Mometasone is an intranasal corticosteroid. Intranasal corticosteroids are
steroid medicines that are formulated for use as a nasal spray to decrease
inflammation in the nasal passages. Symptoms of allergic rhinitis such as a
runny, itchy or blocked nose and sneezing are a result of inflammation in the
In South Africa mometasone is registered for the treatment and prevention of
seasonal and perennial allergic rhinitis, including hay fever.
High doses of this medicine for prolonged periods of time may increase
systemic absorption, which may lead to a various adverse effects. Systemic
effects are however unlikely at the recommended dose.
Note that this nasal spray will not relieve the symptoms of nasal allergies
immediately - it may take several days of treatment to achieve its maximum
benefit. To achieve its full effect, the spray should be used regularly
throughout the allergic period to keep the nasal inflammation under control.
How does mometasone work?
Mometasone as a nasal preparation reduces nasal symptoms by reducing
inflammation and mucus production in the nose.
Drug schedule: schedule 3
Available as: mometasone is available as an aqueous nasal spray.
What does it do? Mometasone decreases inflammation in the nasal
Overdose risk: low
Dependence risk: low
Is mometasone available as a generic? no
Is mometasone available on prescription only? yes
Onset of effect: within 3 days
Duration of action: several days after stopping treatment
Consult your doctor before using this drug if:
- you have bleeding tendencies, or suffer from recurring nasal
- you have a viral, bacterial or fungal nasal or respiratory
- you are also taking oral corticosteroid drugs
Pregnancy: avoid. Potential risk to the foetus has been reported.
Consult your doctor before use, or if you are planning to fall pregnant.
Breastfeeding: avoid. It is unknown how this medication may affect
your baby. Consult your doctor before use.
Porphyria: avoid. It is unknown how this medication may affect your
condition. Consult your doctor before use.
Infants and children: this medication is not intended for use in
children under the age of 2 years.
The elderly: no special precautions need to be taken.
Driving and hazardous work: no special precautions need to be
Alcohol: no special precautions need to be taken.
Possible side effects
| Side effect
|| Consult your doctor
| Only if severe
|| In all cases |
Interactions are unlikely when this medication is used as directed.
A small overdose is no cause for concern. In case of intentional large
overdose, seek emergency medical attention.
Use once daily in each nostril.
This material is not intended to substitute medical advice, but is for
informational purposes only.
Please consult a physician for specific treatment and