Alamast Recall

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Questions & Answers

Side Effects & Adverse Reactions

For topical ophthalmic use only. Not for injection or oral use.

Legal Issues

There is currently no legal information available for this drug.

FDA Safety Alerts

There are currently no FDA safety alerts available for this drug.

Manufacturer Warnings

There is currently no manufacturer warning information available for this drug.

FDA Labeling Changes

There are currently no FDA labeling changes 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).


There is currently no drug history available for this drug.

Other Information

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:

Chemical Structure


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.

Alamast Manufacturers

  • Vistakon Pharmaceuticals Llc
    Alamast (Pemirolast Potassium) Solution [Vistakon Pharmaceuticals Llc]

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