Sinarest 1 mL Nasal spray, solution
Clinical Summary
Quick overview from the medicine insert
Indication
Temporary relief of nasal congestion.
Dosage (summary)
0.025% for children 2-6 years: 2-3 sprays every 10-12 hours; 0.05% for adults/children >6 years: 1-2 sprays every 10-12 hours. Max 2 applications/24h, not >5 days.
Onset of Action / Duration
Onset: minutes, Duration: up to 12 hours
Special Populations
- Children under 6 years
- Elderly
- Diabetes mellitus
- Cardiovascular disorders
Pregnancy & Breastfeeding
Safety in pregnancy/lactation not established.
Key Drug Interactions
- Monoamine oxidase inhibitors
- Cardiac glycosides
- Thyroid hormones
- Antihypertensives
- Tricyclic antidepressants
Contraindications
- Hypersensitivity to oxymetazoline
- Narrow-angle glaucoma
- Severe hypertension
- Cardiac asthma
- Rhinitis sicca
Common side effects
- Headache
- Dizziness
- Nausea
- Palpitations
- Rebound congestion
Counselling Points
- Do not exceed recommended dosage
- Wipe nozzle after use
- Consult doctor if symptoms persist
Serious warnings
- Not for >5 days use
- Caution in cardiovascular disorders
- Potential for rebound congestion
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Clinical Particulars
Section 4 of the official insert — extracted exactly as issued, no alterations
4.1 Therapeutic indications
SINAREST is used for the temporary relief of nasal congestion in colds and influenza, hay fever, allergic rhinitis, other upper respiratory allergies, post-nasal drip and sinusitis.
4.2 Posology and method of administration
SINAREST 0,025 % for children 2 to 6 years of age (with adult supervision):
How to use SINAREST 0,025 %:
- Place the tip of the nozzle in one nostril without completely occluding the nostril.
- Bend head slightly forward and spray 2 to 3 times while sniffing briskly, not more than every 10 to 12 hours.
- Treat the other nostril in the same way.
- Do not exceed 2 applications in any 24-hour period.
- Wipe nozzle clean after each use.
Do not exceed the recommended dosage or use for longer than 5 days.
SINAREST 0,05 % for adults and children over 6 years of age:
How to use SINAREST 0,05 %:
- Place the tip of the nozzle in one nostril without completely occluding the nostril.
- Bend head slightly forward and spray 1 to 2 times while sniffing briskly, not more than every 10 to 12 hours.
- Treat the other nostril in the same way.
- Do not exceed 2 applications in any 24-hour period.
- Wipe nozzle clean after each use.
Do not exceed the recommended dosage or use for longer than 5 days.
4.3 Contraindications
SINAREST is contraindicated in:
- Hypersensitivity to oxymetazoline hydrochloride or to any of the ingredients of SINAREST listed in section 6.1.
- Patients where there is inflammation of the skin and mucosa of the nasal vestibule and encrustation (rhinitis sicca).
- Patients receiving monoamine oxidase inhibitors, or within 14 days of its termination.
- Patients with narrow-angle glaucoma.
- Patients after transsphenoidal hypophysectomy.
- Patients with porphyria.
- Patients with acute cardiovascular disease or cardiac asthma.
- Patients with severe hypertension or phaeochromocytoma.
4.4 Special warnings and precautions for use
- SINAREST 0,05 % is not recommended for children under 6 years of age.
- SINAREST should not be used for more than 5 days. If symptoms persist, a doctor should be consulted.
- Prolonged use or excessive application of SINAREST to the nasal mucosa may lead to rebound congestion and rhinorrhoea.
- Use with caution in patients with cardiovascular disorders (especially cardiac dysrhythmias, ischaemic heart disease, tachycardia or hypertension).
- Use with caution in patients with an occlusive vascular disease who are at an increased risk of peripheral ischaemia.
- Caution is advised in patients with hyperthyroidism, who may be at increased risk of effects on the heart (elevated thyroid hormone concentrations may also enhance adrenoceptor sensitivity).
- Use with caution in patients suffering from aneurysms and diabetes mellitus.
- Diabetic and elderly patients have a high incidence of atherosclerotic disease and may also be at higher risk.
- Patients with prostate disorders (such as prostatic hypertrophy) should use SINAREST with caution as they may be at risk of urinary retention.
- SINAREST should not be used by more than one person as it may spread infection.
- Children may be especially sensitive to the effects of SINAREST therefore caution should be used when administering to children.
- SINAREST contains benzalkonium chloride as preservative. Benzalkonium chloride may cause irritation or swelling inside the nose, especially if used for a long time.
4.5 Interaction with other medicines and other forms of interaction
- Severe hypertension may occur when used concomitantly with monoamine oxidase inhibitors (MAOIs) and the combined use is contraindicated (see section 4.3).
- Increased cardiac effects may occur with medicines that increase the sensitivity of the myocardium to beta1 agonists. Take special care when using SINAREST together with cardiac glycosides (such as digoxin) and antidysrhythmics (such as quinidine).
- Caution is required when SINAREST is used in combination with thyroid hormones.
- Use SINAREST with caution in combination with antihypertensive medicines or medicines that cause hypotension, particularly those whose action involves the sympathetic nervous system.
- Interactions with alpha- and beta-blockers may be complex and can produce a hypertensive crisis.
- The antihypotensive effects of adrenergic neurone blockers (such as guanethidine, reserpine, alpha-methyldopa) may be reversed and may result in hypertension.
- Tricyclic antidepressants block the inactivation of epinephrine (adrenaline) and norepinephrine (noradrenaline) by uptake into the nerve endings and as a result hypertension and dysrhythmias may occur.
- Maprotiline may potentiate the pressor effects of oxymetazoline.
- The effect of central nervous system (CNS) stimulants may be potentiated, while the vasoconstrictor and vasopressor effects of alpha agonists may be enhanced by medicines with similar effects, such as ergot alkaloids or oxytocin.
- SINAREST should be used with caution in patients undergoing anaesthesia with cyclopropane, halothane or other halogenated anaesthetics, as they may induce ventricular fibrillation.
- Inhalation anaesthetics may increase the risk of dysrhythmias when used in combination with SINAREST.
- Possible additive cardiovascular toxicity may occur when sympathomimetics are given with antiparkinsonian medicines, such as bromocriptine.
4.6 Fertility, pregnancy and lactation
Safety in pregnancy and lactation has not been established.
4.7 Effects on ability to drive and use machines
As SINAREST may cause dizziness, light-headedness and hypotension, it is recommended that driving and operating machinery be avoided until it is known how SINAREST affects the patient.
4.8 Undesirable effects
Immune system disorders: Frequency unknown: Hypersensitivity.
Metabolism and nutrition disorders: Frequency unknown: Altered metabolism (including disturbances of glucose metabolism).
Psychiatric disorders: Less frequent: Anxiety, irritability, nervousness, restlessness. Frequency unknown: Agitation, psychotic states, fear.
Nervous system disorders: Less frequent: Headache, insomnia, tremor. Frequency unknown: Confusion, pain, dizziness, light-headedness, drowsiness, trembling, hallucinations (particularly in children).
Eye disorders: Less frequent: Eye irritation, discomfort or redness. Frequency unknown: Blurred vision.
Cardiac disorders: Less frequent: Palpitations, tachycardia. Frequency unknown: Ventricular dysrhythmias, anginal pain, cardiac arrest, bradycardia.
Vascular disorders: Frequency unknown: Vasoconstriction, hypertension, hypotension, cerebral haemorrhage, reactive hyperaemia.
Respiratory, thoracic and mediastinal disorders: Less frequent: Sneezing. Frequency unknown: Pulmonary oedema, increased nasal discharge, dyspnoea, increase in stuffy nose, nasal dryness, nasal irritation, throat irritation, rebound congestion.
Gastrointestinal disorders: Less frequent: Dryness of the mouth and throat, nausea. Frequency unknown: Vomiting, reduced appetite, thirst.
Skin and subcutaneous tissue disorders: Frequency unknown: Increased sweating, unusual paleness, piloerection, rash.
Renal and urinary disorders: Frequency unknown: Difficult or painful urination, urinary retention.
General disorders and administration site conditions: Less frequent: Flushing Frequency unknown: Local stinging, burning, hypersalivation, cold extremities, weakness, fainting, appetite reduction.
Reporting of suspected adverse reactions: Reporting suspected adverse reactions after authorisation of SINAREST is important. It allows continued monitoring of the benefit/risk balance of SINAREST. Health care providers are asked to report any suspected adverse reactions to SAHPRA via the Med Safety App (MedSafety X SAHPRA) and eReporting platform (who- umc.org) found on SAHPRA website.
4.9 Overdose
See section 4.8. Systemic administration causes sedation, dry mouth and sweating. Alpha-adrenergic blockade may be necessary for severe hypertension. Symptoms of moderate or severe overdose can be mydriasis, nausea, cyanosis, fever, spasms, tachycardia, cardiac arrhythmia, cardiac arrest, hypertension, oedema of the lungs, dyspnoea, psychic disturbance. The inhibition of functions of the central nervous system such as somnolence, lowering of the body temperature, bradycardia, shock like hypotension, apnoea and loss of consciousness is also possible.
Paediatric population: Clinical manifestation includes CNS signs and symptoms: convulsion and coma, hallucinations, bradycardia, apnoea, hypertension changing into hypotension.
Withdrawal or reduction of dosage may be required.
Treatment: A nonselective alphalytic such as phentolamine may be administered to depress the increased blood pressure. Intubation and artificial respiration may be necessary in serious cases. In the case of moderate or severe inadvertent oral consumption standard methods to remove unabsorbed medicines are indicated. Further treatment is supportive and symptomatic.