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Overview

If hayfever or allergies leave your eyes red, itchy, and watery, sodium cromoglicate eye drops provide effective relief by preventing allergic reactions before they start. As the trusted generic alternative to Opticrom, these drops help calm irritation, reduce redness, and restore comfort — giving you clear eyes and confidence throughout allergy season.

This medicine requires a secure online consultation with a UK-registered prescriber, and will only be supplied if clinically appropriate.


What is Sodium cromoglicate


Sodium cromoglicate eye drops are a type of mast cell stabiliser used to treat allergic conjunctivitis (eye allergies). Unlike antihistamine drops, which only target symptoms after they appear, sodium cromoglicate works proactively by preventing the release of histamine in the eyes. This makes it particularly effective for long-term management and prevention of allergy flare-ups.

They are commonly used to treat seasonal allergic conjunctivitis (hay fever-related eye allergies) as well as year-round allergic conjunctivitis caused by dust, pets, or other environmental triggers.

With regular use during allergy season, sodium cromoglicate helps reduce itching, redness, and watering of the eyes, keeping symptoms under control. It is effective for both short-term and ongoing allergy relief. As the generic version of Opticrom, it provides the same active ingredient at a lower cost, offering a trusted and affordable option for allergy sufferers.

Directions

  • Adults and children aged 6+: One or two drops in each affected eye, four times daily
  • Use regularly for continued protection during allergy season
  • Wash hands thoroughly before applying
  • Do not touch the dropper tip to the eye or any surface
  • Remove contact lenses before use; wait at least 15 minutes before reinserting


Always follow the advice of your prescriber or pharmacist.

Side Effects

Like all medicines, sodium cromoglicate eye drops can cause side effects, although not everyone will experience them. Most are mild, temporary, and improve as your eyes adjust to treatment.

Common (may affect up to 1 in 10 people):

  • Mild stinging or burning after use – this usually settles within a few minutes of applying the drops.
  • Temporary blurred vision – vision may be affected for a short time after use; avoid driving or operating machinery until your sight clears.


Less common (may affect up to 1 in 100 people):

  • Eye dryness or irritation – some people may notice a gritty or uncomfortable feeling in the eyes.
  • Increased tearing – the drops may occasionally make the eyes water more before symptoms improve.


Rare but serious (stop use and seek urgent medical advice):

  • Severe allergic reaction (anaphylaxis) – symptoms may include swelling of the face, lips, tongue, or throat, difficulty breathing, or a sudden rash. This is extremely rare but requires immediate medical attention.


Most people tolerate sodium cromoglicate eye drops well, and side effects (if they do occur) are usually mild. If you are worried about any symptoms, or they do not improve, speak to your doctor, pharmacist, or prescriber.

Disclaimer: This is not a complete list of side effects. Always read the patient information leaflet that comes with your medicine for full details. If you experience severe or worrying symptoms, seek medical advice straight away. In an emergency, call 999 or go to A&E.

Warnings

Sodium cromoglicate eye drops may not be suitable if you:

  • Are allergic to sodium cromoglicate or any of the ingredients
  • Wear contact lenses frequently (always remove before applying)
  • Are pregnant or breastfeeding (seek medical advice first)

FAQ's

What are sodium cromoglicate eye drops used for?
They treat itchy, red, watery eyes caused by hayfever and other allergies.

Are they the same as Opticrom?
Yes — they contain the same active ingredient, but are the generic version.

How quickly do they work?
They may take a few days of consistent use to build up effectiveness.

Can I use them every day?
Yes — they are designed for regular, daily use during allergy season or year-round.

Can children use sodium cromoglicate drops?
Yes — they are suitable for children aged 6 and over.

Do they cause drowsiness?
No — because the medicine works locally in the eyes, it does not cause drowsiness.