Spend more than £30 and receive free shipping • Buy 4 products for a 10% discount

Cationorm® Eye Drops

New Cationorm® is a first-of-a-kind eye drop that acts like the body’s natural tears to provide long-lasting relief from the uncomfortable symptoms of dry eyes.

(12 reviews) Leave a review


Cationorm® is different from eye drops you might have tried before. It uses ionic technology to attract it’s positively charged solution to the negatively charged surface of the eye, locking in hydration for longer.

Its deep-acting clinically proven formula targets all three layers of the eye:

  • Restoring outer protection
  • Rehydrating and rebalancing the water-based layer
  • Supporting inner healing

Kind to even sensitive eyes, Cationorm® is preservative free and is suitable for everyday use and for contact lens wearers. Always read the label. 


Santen Pharmaceuticals


Dry eye drops (also known as artificial tears)


10ml preservative-free bottle


Can be used while wearing contact lenses


90 days



Leave a review

If you get any side effects for any of our products, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in the package leaflet. You can also report side effects directly to MHRA. Reporting forms and information can be found at www.mhra.gov.uk/yellowcard or search for MHRA Yellow Card in the Google Play or Apple App Store.

Side effects relating to our products can also be reported to safetyEU@santen.com.

It is important to always report any side effects. This helps us to understand the cause of the side effect and to respond effectively where necessary. By providing your email address, you agree to receive an email response from Santen to your inquiry. Your email address will only be used to respond to your inquiry. The information you submit will be governed by our privacy policy.

Customer reviews for Cationorm® Eye Drops

All reviews are verified

  1. The eye drop function is a malfunction the amount of external pressure I have to apply to release and then it’s a spurt than a drop

    William Bolam, Newcastle upon tynr

    • Santen OcuWellness


      Thanks for your feedback William. We’re sorry to hear that our product fell short of your expectations. We would welcome the opportunity to discuss your concerns.

      A member of our team will be in touch.

      Thank you!

  2. These drops are so comforting for my dry eye condition. I am really impressed by their efficacy and after trying most products on the market in the last 10 yrs I’m very happy to continue using them. I have also reduced the number of drops necessary each day which is far more convenient for me.

    Jill, Wolverhampton

  3. I have used numerous products ,including preservative free prescription drops for ten years. These Cationorm eye drops are far and away more effective than any others. I am really delighted at how my severe dry eye problems have been reduced. Well worth the money.

    George, Birmingham

  4. Have just finished my first bottle. Much more relief than with any of the previous prescription drops. Very impressed,

    George, Birmingham

  5. Honestly super happy I have tried so many many eye drops, sprays and creams and and nothing worked that great. Now that I am using your product my eyes feel better and look better after a few days very happy with Cationorm I really recommend people should try it.

    J, Northern Ireland

  6. These drops feel really nourishing for the eyes. First application I was aware of seeing all milky for a few seconds after application but after using for a day this effect disappeared and my eyes started to feel a lot more hydrated and comfortable. Very good product. Would definitely buy again.


  7. An excellent and effective product. I have a condition called blepharitis. These drops are the best and MOST effective that I have found. I recommended them wholeheartedly

    Deanne, Ely Cambs

  8. To be honest these drops did not make any difference and was a waste of time. They did not improve or relieve my condition so was disappointed that did not get results what you said these drops could do

    Veronica, Essex

  9. I have spent quite a lot of money on eye drops in the past, but nothing beats this one. No watery eyes make up stays on. Brilliant eye drops even though a little expensive well worth the money

    Patricia, Manchester

  10. I have very dry eyes and corneal erosion. These eye drops are very soothing and they don’t affect my vision, so no blurring after they’ve been applied. I use them 4 times a day.


  11. I bought these because the marketing led me to believe they would improve my dry eye symptoms . After using for 10 days my dry eyes have not shown any improvement whatsoever.. these eye drops are like all other eye drops I have tried ..comforting for a few minutes then .., you still have dry eyes

    Jones, Cheshire West

  12. I use eye drops for glacoma which give me a lot of discomfort. I have tried various drops for dry eyes and associated problems but nothing worked. My consultant gave me Cationorm to try and I have to say it gives me far more relief than anything else I have tried. I shall be ordering more shortly.

    Pamela, Hampshire

How to use Cationorm®

For best results, apply 1 drop in each eye 1 to 4 times daily, at the first signs of discomfort.

1) Wash your hands thoroughly.
2) Tilt your head back and gently pull down your lower eyelid and look up.
3) Hold the bottle above your eye, gently squeeze one drop and blink several times (do not touch your eye or eyelashes with the tip of the bottle).

Learn more about how to quickly and easily apply your eye drops.

Ingredients that make Cationorm® work

We’ve developed a unique combination of ingredients specifically designed to give your eyes lasting hydration:

  • Cetalkonium chloride (CKC) brings the ‘positive charge’ that attracts hydration to the eye’s surface.
  • Mineral oils that work hard to replenish the fatty oil outer layer of the eye.
  • Glycerol that helps protect the eye from irritation and other uncomfortable symptoms.

We’ve managed to combine all the ingredients in one preservative free bottle, so Cationorm® is appropriate to use daily for as long as you need it.

Cationorm® also contains tyloxapol, poloxamer 188, tris-hydrochloride, tromethamine, cetalkonium chloride and water.