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VIRALEZE™ Barrier Nasal Spray - 10ml

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Based on 5 reviews
Based on 5 reviews
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Nasal Congestion
Suitable For
12 Years +
All Ages
Faye Bonnell - Medical Content Writer
Faye Bonnell
Medical Content Writer
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist

What is VIRALEZE™?

VIRALEZE™ is a barrier nasal spray that can be used to physically trap and block cold/respiratory viruses, according to laboratory studies. The active ingredient in this nasal spray is astodrimer sodium, a molecule that will act locally in the nasal cavity instead of passing into the bloodstream. 


How to use VIRALEZE™

VIRALEZE™ is a nasal spray that can be used in each nostril up to 4 times a day by adults and children over 12 years old. To use this medicine, simply remove the cap and press down to release a spray into each nostril whilst taking a gentle breath in through your nose. Try to aim the tip towards the side of your nostril away from the middle of your nose. 

VIRALEZE™ can be taken at any time of day, at home or on the go. You should wash your hands with soap and water before using this nasal spray, but if this isn’t possible a hand sanitiser can be used. You should not use this nasal spray for more than 30 consecutive days. 

If you are also using a different nasal spray to treat hay fever or allergy symptoms, you should be able to use VIRALEZE™ as long as you check with your doctor or Chemist4U pharmacist first. It is usually advisable to use your existing hay fever nasal spray first, waiting 2-4 hours before using VIRALEZE™. 


How does astodrimer sodium work?

VIRALEZE™ contains the active ingredient astodrimer sodium, an antiviral that is thought to inactivate viruses. The astodrimer sodium molecules target the area in the nasal cavity where respiratory viruses first attach and start to multiply. The ‘spike’ proteins on these viruses become trapped by astodrimer sodium and are then unable to infect the body’s cells. 


Can I use VIRALEZE™ if I’ve had the COVID-19 vaccine or if I’m due to take a COVID-19 test? 

It is safe to use VIRALEZE™ if you have already had any of the available COVID-19 vaccines. If you’re due to get a COVID-19 test, VIRALEZE™ will not interfere with this process and you will still receive an accurate positive or negative result. If you have any concerns about using VIRALEZE™ before one of these procedures, we recommend speaking to your doctor, pharmacist or the healthcare professionals administering your test or the vaccine.


Is this medicine suitable for pregnant or breastfeeding women?

If you’re pregnant, think you may be pregnant, trying for a baby or breastfeeding, you should speak to your doctor or Chemist4U pharmacist before using VIRALEZE™ to make sure it’s right for you and your baby. 


When should this medicine not be used? 

VIRALEZE™ should be suitable for most adults and children over 12 years old, however, you should not use this medicine if you are allergic to astodrimer sodium, hydroxybenzoates or any of the other ingredients in this medicine. 

Some nasal products should not be used with this medicine. If you’re already taking any other nasal products, speak to your doctor or Chemist4U pharmacist before using VIRALEZE™. 


Are there any side effects?

As VIRALEZE™ doesn’t get into your bloodstream, it’s unlikely to cause any side effects. If you experience any sign of an allergic reaction, nose bleeds, nasal irritation or congestion, you should stop using VIRALEZE™ and speak to a Chemist4U pharmacist for further advice. 

If you experience any respiratory symptoms that are new, persistent or worse than usual, speak to your doctor or Chemist4U pharmacist. 

If you experience any side effects, including any not included in the patient information leaflet, you can report them using the MHRA Yellow Card Scheme


Storage information

Keep this medicine in its original box and do not use after the expiry date, referring to the last day of the month stated. Keep out of reach and sight of children.



Important information


This product is a medicine; make sure to speak to your doctor or Chemist4U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to


If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or our pharmacist before taking this product. If you suffer from any allergies, ask your doctor or our pharmacist if this medicine is right for you.


Store all medicines out of sight and reach of children.


Please read the included leaflet carefully before using this product.


Please contact your GP if appropriate regarding this product.


Helpful Advice on Medication Restrictions & Addiction


For further information on our medication restrictions policy, please click here.



If you are concerned about addiction to 'over the counter' medication, we urge you to visit the below links for professional help and advice:


NHS Help & Advice on Drug Addiction


Talk To Frank - Drug Addiction Help & Support

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