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Get key facts and figures about chronic dry eye


Generic Name: pemirolast ophthalmic (pem IR oh last off THAL mik)
Brand Name: Alamast

What is Alamast (pemirolast ophthalmic)?

Pemirolast is an anti-allergic medicine. It inhibits processes in the body that cause allergic symptoms after exposure to an allergen.

Pemirolast ophthalmic (for the eye) is used to treat prevent itching in the eyes caused by allergies.

Pemirolast ophthalmic should not be used to treat eye irritation caused by wearing contact lenses.

Pemirolast ophthalmic may also be used for purposes not listed in this medication guide.

What is the most important information I should know about Alamast (pemirolast ophthalmic)?

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.

What should I discuss with my healthcare provider before using Alamast (pemirolast ophthalmic)?

You should not use pemirolast ophthalmic if you are allergic to it.

To make sure pemirolast ophthalmic is safe for you, tell your doctor if you have:

  • an untreated infection (bacterial, viral, or fungal) in your eye.

FDA pregnancy category C. It is not known whether pemirolast ophthalmic will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant while using this medicine.

It is not known whether pemirolast ophthalmic passes into breast milk or if it could harm a nursing baby. Tell your doctor if you are breast-feeding a baby.

Pemirolast ophthalmic should not be given to a child younger than 3 years old.

How should I use Alamast (pemirolast ophthalmic)?

Follow all directions on your prescription label. Do not use this medicine in larger or smaller amounts or for longer than recommended.

Wash your hands before using the eye drops.

To apply the eye drops:

  • Tilt your head back slightly and pull down your lower eyelid to create a small pocket. Hold the dropper above the eye with the tip down. Look up and away from the dropper and squeeze out a drop.

  • Close your eyes for 2 or 3 minutes with your head tipped down, without blinking or squinting. Gently press your finger to the inside corner of the eye for about 1 minute, to keep the liquid from draining into your tear duct.

  • Use only the number of drops your doctor has prescribed. If you use more than one drop, wait about 5 minutes between drops.

  • Wait at least 10 minutes before using any other eye drops your doctor has prescribed.

Do not use this medicine while wearing contact lenses. Pemirolast ophthalmic contains a preservative that can be absorbed by soft contact lenses. Wait at least 10 minutes after using this medicine before putting in your contact lenses.

Do not touch the tip of the eye dropper or place it directly on your eye. A contaminated dropper can infect your eye, which could lead to serious vision problems.

Store at room temperature away from moisture and heat. Do not freeze. Keep the bottle tightly closed when not in use.

What happens if I miss a dose?

Use the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not use extra medicine to make up the missed dose.

What happens if I overdose?

An overdose of pemirolast ophthalmic is not expected to be dangerous. Seek emergency medical attention or call the Poison Help line at 1-800-222-1222 if anyone has accidentally swallowed the medication.

What should I avoid while using Alamast (pemirolast ophthalmic)?

Avoid wearing contact lenses if your eyes are red.

Do not use other eye medications unless your doctor tells you to.

Alamast (pemirolast ophthalmic) side effects

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

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

  • severe burning or discomfort in your eyes after using the drops.

Common side effects may include:

  • headache; or

  • runny nose, cold or flu symptoms.

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 1-800-FDA-1088.

See also: Side effects (in more detail)

What other drugs will affect Alamast (pemirolast ophthalmic)?

It is not likely that other drugs you take orally or inject will have an effect on pemirolast used in the eyes. But many drugs can interact with each other. Tell each of your healthcare providers about all medicines you use, including prescription and over-the-counter medicines, vitamins, and herbal products.

Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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