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Catacrom 2% w/v Eye Drops - 30 Single Unit Doses

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Laura Shillcock - Medical Content Writer
Laura Shillcock
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist
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Catacrom eye drops are used to relieve and treat irritating symptoms of the eye such as itching, redness, watering and puffiness that are caused by allergies. 

  • Suitable for contact wearers 
  • Treats allergies to pollen, pet hair, and house mites as well as other allergies 
  • Preservative-free - suitable for those who are sensitive to preservatives 
  • Used for eye allergies only


Buy Catacrom eye drops online

Eyes can be greatly affected by allergies such as hay fever, and if you suffer from sensitive, itchy, puffy, watery and red eyes, Catacrom eye drops can soothe and treat these symptoms. They’re used for short-term eye allergies and they’re preservative-free meaning those who have particularly sensitive eyes or cannot use products with preservatives, can use these eye drops. Catacrom eye drops are suitable for adults, the elderly and children. 


How do Catacrom eye drops work? 

Catacrom contains an active ingredient called sodium cromoglicate which belongs to a group of medicines known as anti-allergics. These work by preventing the release of a substance that causes inflammation when the body is exposed to an allergen such as pollen, this substance is known as histamine. The inflammatory response to an allergen is responsible for the irritating eye symptoms you are experiencing.   



Always use this product exactly as described in the patient information leaflet or as your doctor / Chemist4U pharmacist has told you. Before using Catacrom eye drops, ensure your hands are clean. These eye drops are preservative-free which means once they are open they won’t last long, you must use the eye drops as soon as you break the seal, and once you have administered your dose, throw the medicine away even if there is some left. One single unit dose is enough medicine to treat both eyes, and you should administer one or two drops into each eye four times a day. 

To administer the drops, slightly tilt your head back and gently pull your lower eyelid down, then you can drop the medicine into your eye from a distance without touching any part of the eye with the dropper. You should then close your eyes for about 30 seconds to let the medicine work its way over your eyes and wipe away any excess drops that fall from your eyes. 


Side effects

Like all medicines, Catacrom eye drops may cause side effects in some people, but these won’t affect everybody. Seek emergency medical attention if you notice any signs of a severe allergic reaction, symptoms of which include swelling of the face and throat, skin rash, breathing difficulties and/or loss of consciousness. Common side effects include:

  • Mild eye irritation including stinging, burning and blurred vision which should only last a few minutes Do not drive or use machinery if your vision is blurred.

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.



Do not use Catacrom eye drops if you are allergic to sodium cromoglicate or any other ingredient in this medicine. You must also be sure that your eye symptoms are caused by allergies and not something else before you use this medicine. An allergy usually affects both eyes and is accompanied by a blocked or runny nose, and it shouldn’t affect your eyesight. 

If you’re using another type of eye drop as well as Catacrom, wait at least five minutes between drops. 

Before using these eye drops, tell your doctor or pharmacist about any other medicines you may be taking or have recently taken 


Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant or are planning to have a baby, you must ask your doctor or Chemist4U pharmacist for advice before using these eye drops. 


Storage information

Store below 25°C out of sight and reach of children. Do not use after the expiry date, referring to the last day of the month stated on the packaging. Use the single unit doses immediately after opening then throw away the container. Do not throw away any medicines via wastewater or household waste.


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

Please read the included leaflet carefully before using this product.

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