In clinical studies lasting up to 17 weeks with ALAMAST® (pemirolast potassium ophthalmic solution) ophthalmic solution, headache, rhinitis, and cold/flu symptoms were reported at an incidence of 10–25%. The occurrence of these side effects was generally mild. Some of these events were similar to the underlying ocular disease being studied.
The following ocular and non-ocular adverse reactions were reported at an incidence of less than 5%:
Ocular: burning, dry eye, foreign body sensation, and ocular discomfort.
Non-Ocular: allergy, back pain, bronchitis, cough, dysmenorrhea, fever, sinusitis, and sneezing/nasal congestion.