Sodium cromoglicate eye drops are used to treat allergic conjunctivitis, helping relieve itchy, red and watery eyes caused by pollen, dust, pet dander or other allergens. They work by reducing the release of histamine from eye cells, easing irritation during allergy symptoms.

These drops stabilise mast cells in the eyes, which helps prevent histamine release when allergens trigger a reaction. This makes them useful for regular daily use, especially during allergy season, to stop symptoms developing rather than just treating them after they appear.

They do not work instantly. Relief usually builds over several days, with full benefit taking up to a week. Because of this delayed effect, people often start using sodium cromoglicate early in the allergy season to prevent symptoms from developing. Other drops are also available in the form Olapatadine eye drops that may provide quicker relief. 

Apply one or two drops to each affected eye up to four times daily, or as directed. Pull down the lower lid, squeeze the drop into the pocket and avoid touching the bottle tip. Blink gently and wait before using contact lenses or other eye products.

Yes. These drops are considered very safe and can be used throughout allergy season or longer if symptoms persist. Because they work preventatively, many people use them daily for stable relief from seasonal or year-round allergic eye irritation. Other daily options include oral antihistamines such as fexofenadine and cetirizine. 

Remove contact lenses before using the drops, as preservatives may irritate the surface of the lens. Wait at least 10–15 minutes before putting lenses back in to keep your eyes comfortable and avoid stinging. If stinging persists, other options may include Olapatadine eye drops.

Mild stinging, temporary blurred vision or slight irritation are the most common effects and usually settle quickly. Serious reactions are rare, but persistent discomfort, swelling or worsening redness should be reviewed by a clinician. If side effects persist, other options may include Olapatadine eye drops.

Yes. Many people combine these drops with antihistamine tablets such as cetirizine or fexofenadine to control both eye symptoms and full-body allergy effects. Using both can provide a stronger overall response during heavy pollen or dust exposure.

Yes. They are commonly used in children, including those with seasonal allergies or sensitive eyes. Always follow age-specific instructions and check with a pharmacist if younger children need ongoing daily use.

Some people experience mild temporary blurring just after applying the drops. Wait until your vision is fully clear before driving or operating machinery to stay safe. If blurring persists, other suitable alternatives include Olapatadine eye drops.

Most bottles should be thrown away after 4 weeks to prevent contamination, even if solution remains. Always check the leaflet because expiry rules can vary slightly between brands.

Yes. Sodium cromoglicate is safe to use alongside nasal sprays such as mometasone for wider allergy control. Combining treatments can relieve both nasal and eye symptoms during high pollen periods.

Yes. These drops help reduce chronic irritation from indoor allergens such as dust mites or pet dander when used consistently. Regular daily use is often needed for stable symptom control.

Try to avoid rubbing your eyes, using old lenses or applying drops over makeup, as these can increase irritation. If symptoms worsen or persist despite treatment, seek clinical advice.

Yes. You can buy them without a prescription from registered UK pharmacies. Always choose a regulated website to avoid counterfeit or unsuitable products, and follow the recommended dosing instructions.