For topical ophthalmic use only. Not for injection or oral use.
There is currently no manufacturer warning information available for this drug.
ALAMAST® ophthalmic solution is indicated for the prevention of itching of the eye due to allergic conjunctivitis. Symptomatic response to therapy (decreased itching) may be evident within a few days, but frequently requires longer treatment (up to four weeks).
ALAMAST® (pemirolast potassium ophthalmic solution) is a sterile, aqueous ophthalmic solution with a pH of approximately 8.0 containing 0.1% of the mast cell stabilizer, pemirolast potassium, for topical administration to the eyes.
Pemirolast potassium is a slightly yellow, water-soluble powder with a molecular weight of 266.3.
The chemical structure is presented below:
C10H7KN6O
Chemical name
9-methyl-3-(1 H-tetrazol-5-yl)-4H-pyrido[1 ,2-α] pyrimidin-4-one potassium
Each mL contains
ACTIVE: pemirolast potassium 1 mg (0.1 %); PRESERVATIVE: lauralkonium chloride 0.005%; INACTIVES: glycerin, dibasic sodium phosphate, monobasic sodium phosphate, phosphoric acid and/or sodium hydroxide to adjust pH, and purified water. The osmolality of ALAMAST® ophthalmic solution is approximately 240 mOsmol/kg.