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(pemirolast potassium) Ophthalmic Solution 0.1%


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:

ALAMAST® (pemirolast potassium) Structural Formula Illustration


Chemical name

9-methyl-3-(1H-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® (pemirolast potassium ophthalmic solution) oph-thalmic solution is approximately 240 mOsmol/kg.

What are the possible side effects of pemirolast ophthalmic (Alamast)?

Serious side effects are not expected with pemirolast ophthalmic.

Commonly, some burning, irritation, itching, dry eyes, or other eye discomfort may occur.

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

Read All Potential Side Effects and See Pictures of Alamast »

What are the precautions when taking pemirolast potassium ophthalmic solution (Alamast)?

Consult your...

Read All Potential Precautions of Alamast »

Last reviewed on RxList: 12/30/2008
This monograph has been modified to include the generic and brand name in many instances.

Alamast - User Reviews

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