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Alrex

Alrex Side Effects

Robert Chad Hakim, PharmD, BCCCPDaisy Chau, PharmD
Reviewed by Robert Chad Hakim, PharmD, BCCCP, Daisy Chau, PharmD
Last reviewed on July 28, 2025

The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.

Common Side Effects

  • Blurry vision
  • Burning right after using the drop
  • Eye discharge
  • Dry eyes
  • Watery eyes
  • Feeling like something is in the eye
  • Itchy eyes
  • Sensitivity to light

Note: All common side effects listed above were reported in 5% to 15% of people in studies.

Less Common Side Effects

  • Pink eye
  • Cornea problems
  • Redness of the eyelid
  • Eye irritation, pain, or discomfort
  • Headache
  • Runny or stuffy nose
  • Sore throat

Source: DailyMed

The following Alrex side effects have also been reported

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common

Blurred vision or other change in vision

redness or swelling of the eye

sensitivity of the eyes to light

swelling of the membrane covering the white part of the eye

Less common

Decreased vision

discharge from the eye

eye discomfort, irritation, or pain

redness of the eyelid or inner lining of the eyelid

tiny bumps on the inner lining of the eyelid

Incidence not known

Blindness

gradual blurring or loss of vision

loss of vision

nausea

slow wound healing

tearing

vomiting

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common

Burning feeling when medicine is applied

dry eyes

feeling of something in the eye

headache

itching

runny nose

sore throat

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

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Why trust our experts?

Robert Chad Hakim, PharmD, BCCCP, started his full-time career as a clinical pharmacist at UCLA Health in the general medicine, general cardiology, and ICU units after completing residency in 2016. He also was the preceptor for the general medicine rotation from 2017 to 2021, which was a required rotation for all pharmacy residents.
Daisy Chau, PharmD
Reviewed by:
Daisy Chau, PharmD
Daisy Chau, PharmD, is the drug information pharmacist manager at GoodRx. She is licensed in California and has more than 6 years of experience working as a pharmacist in drug information.

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