Sterimar Hypertonic Congestion Relief Nasal Spray – 100ml

Is Sterimar Hypertonic Nasal Spray Right for Your Blocked Nose?

A blocked nose is miserable. Whether it's a cold, hay fever, or sinusitis making it hard to breathe, finding something that actually works — without harsh chemicals — matters. Sterimar Hypertonic Congestion Relief Nasal Spray 100ml is a drug-free, preservative-free sea water nasal spray designed to relieve nasal congestion by clearing excess mucus and reducing swelling in the nasal passages. It's suitable for adults and children aged 3 and over, making it a versatile option for the whole family. If you're also managing allergy-related symptoms, you might find our allergy and hay fever range useful alongside this spray.

Nasal congestion is one of the most common complaints seen in UK pharmacies. The NHS notes that a blocked nose is typically caused by swollen blood vessels in the nasal lining, often triggered by infection, allergens, or irritants. Sterimar's hypertonic formula — containing 2.3% sodium chloride derived from natural sea water — works with your body's own physiology rather than against it.

How Does Sterimar Hypertonic Nasal Spray Work?

The science behind this spray is straightforward. A hypertonic nasal spray contains a higher concentration of salt than your body's own fluids. This concentration difference creates an osmotic gradient — meaning fluid is drawn out of the swollen nasal tissue and into the nasal cavity, where it can be blown away. The result? Reduced swelling, thinner mucus, and easier breathing.

• The 2.3% sodium chloride solution is more concentrated than standard isotonic saline (0.9%), making it more effective at reducing mucosal oedema.
• It helps thin and loosen thick, sticky mucus so it can drain more easily.
• The micro-diffusion spray delivers a fine, even mist that coats the nasal lining without causing discomfort.
• It contains no decongestant drugs, so there is no risk of rebound congestion (rhinitis medicamentosa) with regular use.

Who Should Use Sterimar Hypertonic Congestion Relief Spray?

This spray is a good fit for anyone dealing with nasal congestion who wants a drug-free option. It's particularly useful if you've been told to avoid decongestant medications — for example, if you have high blood pressure or are pregnant. That said, always check with your pharmacist or GP if you're unsure.

• Adults with nasal congestion caused by colds, flu, or sinusitis
• Hay fever and allergy sufferers experiencing a blocked or runny nose
• Children aged 3 years and over (under medical guidance for younger children)
• People who cannot use medicated decongestant sprays due to health conditions or medication interactions

How Does Sterimar Hypertonic Compare to Isotonic Nasal Sprays?

Is Sterimar Hypertonic Nasal Spray Safe to Store and Use Long-Term?

Storage is simple. Keep the spray below 25°C, away from direct sunlight, and store it upright. Do not freeze it. The can is pressurised, so keep it away from heat sources and do not puncture it. Once opened, the spray can be used until the expiry date printed on the packaging — there's no need to discard it after a set number of days, unlike some liquid nasal rinses.

Unlike medicated decongestant sprays, this hypertonic nasal spray does not carry a risk of dependency or rebound congestion, which makes it suitable for longer-term use when symptoms persist. If you're managing a cold alongside other symptoms, our cold and flu range has additional products that may help. Always read the label before use.

This product is a medicine. Speak to your doctor or pharmacist before using if you have an underlying medical condition or are taking other medicines.

What Is Sterimar Hypertonic Nasal Spray and What Is It Used For?

Sterimar Hypertonic Congestion Relief Nasal Spray is a drug-free, preservative-free nasal spray containing 2.3% sodium chloride derived from natural sea water. It is used to relieve nasal congestion — that uncomfortable blocked feeling in your nose — caused by a range of conditions including the common cold, sinusitis, rhinitis, and hay fever. It works by drawing excess fluid out of swollen nasal tissues, helping to thin mucus and restore easier breathing. It is available over the counter without a prescription and is classified as a General Sale List (GSL) medicine in the UK.

What Do You Need to Know Before Using Sterimar Hypertonic Nasal Spray?

Before using this spray, there are a few important things to be aware of. It is generally well tolerated, but certain situations require extra caution.

Do not use this spray if:

• You are allergic to any of the ingredients (sodium chloride, sea water components)
• Your child is under 3 years old, unless a doctor or pharmacist has specifically advised it
• You have had recent nasal or sinus surgery — seek medical advice first
• You have a known condition affecting nasal anatomy that could be worsened by pressurised sprays

Warnings and precautions:

• Avoid spraying directly onto the nasal septum — angle the nozzle slightly outward
• If symptoms persist for more than 10 days, or worsen, consult your GP
• Keep out of reach of children
• The canister is pressurised — do not puncture, incinerate, or expose to temperatures above 50°C

Drug interactions:

• No known drug interactions have been identified for this product
• It does not contain any active pharmaceutical ingredients that would interact with other medicines

How Should You Use Sterimar Hypertonic Nasal Spray?

Using this spray correctly makes a real difference to how well it works. Follow these steps each time you use it.

1. Blow your nose gently to clear any loose mucus before you start.
2. Hold the spray upright and remove the protective cap.
3. Tilt your head slightly forward and insert the nozzle into one nostril.
4. Press the pump firmly and breathe in gently through your nose at the same time.
5. Remove the nozzle and breathe out through your mouth.
6. Repeat in the other nostril.
7. Blow your nose gently again to remove loosened mucus.
8. Replace the cap after use and store the spray upright.

What Are the Possible Side Effects of Sterimar Hypertonic Nasal Spray?

Side effects with this spray are uncommon. Because it contains no drugs or preservatives, the risk of adverse reactions is low. However, as with any nasal spray, some people may notice mild effects, particularly when first using it.

Common side effects:

• Mild stinging or burning sensation in the nose immediately after use
• Temporary increase in nasal discharge as mucus is loosened
• Sneezing shortly after application

Less common side effects:

• Nasal dryness if used very frequently
• Mild irritation of the nasal lining

If you experience any unexpected or severe reaction, stop using the spray and speak to your pharmacist or GP. You can also report suspected side effects to the MHRA via the Yellow Card scheme at yellowcard.mhra.gov.uk. For broader symptom management during a cold or allergy season, our ear, nose and throat range includes a variety of supportive products.

How Should You Store Sterimar Hypertonic Nasal Spray?

Correct storage keeps the spray effective and safe to use throughout its shelf life. If you're also managing children's symptoms, our baby and toddler range has age-appropriate products worth exploring.

• Store below 25°C in a cool, dry place
• Do not freeze
• Keep away from direct sunlight and heat sources
• Store upright at all times
• Do not puncture or incinerate the pressurised canister, even when empty
• Keep out of reach and sight of children
• Do not use after the expiry date printed on the packaging