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Pemirolast ophthalmic Side Effects

Medically reviewed by Last updated on Apr 9, 2023.

Applies to pemirolast ophthalmic: ophthalmic solution.


Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

Get emergency medical help if you have any of these signs of an allergic reaction while taking pemirolast ophthalmic: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using this medicine and call your doctor at once if you have:

Common side effects may include:

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

For Healthcare Professionals

Applies to pemirolast ophthalmic: ophthalmic solution.


Respiratory side effects have included rhinitis and cold or flu symptoms in 10% to 25% of patients. Less common side effects that have occurred in less than 5% of patients have included bronchitis, cough, sinusitis, sneezing, and nasal congestion.[Ref]

Nervous system

Nervous system side effects have included headache in 10% to 25% of patients.[Ref]


Ocular side effects have included burning, dry eye, foreign body sensation, and ocular discomfort in less than 5% of patients.[Ref]


Hypersensitivity reactions have been reported in less than 5% of patients.[Ref]


Genitourinary side effects have included dysmenorrhea (less than 5%).[Ref]


Musculoskeletal side effects have included backache in less than 5% of patients.[Ref]


1. Product Information. Alamast (pemirolast ophthalmic). Santen Inc. 2001;PROD.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.