Skip to Content
Looking to save on your medications?  Find out how 


Generic name: zafirlukast

What is Accolate?

Accolate is a prescription medicine used to help prevent asthma attacks and for the long-term treatment of asthma symptoms in adults and children 5 years and older.

It is not known if Accolate is safe and effective when used in children under 5 years old. The effect of Accolate on growth in children has not been determined.

Do not take Accolate if you need relief right away for a sudden asthma attack. If you get an asthma attack, you should follow the instructions your healthcare provider gave you for treating asthma attacks.

Who should not take Accolate?

Do not take Accolate if you;

  • are allergic to zafirlukast or any of the ingredients in Accolate. See the end of this leaflet for a complete list of ingredients in Accolate.
  • have problems with your liver.

What should I tell my healthcare provider before taking Accolate?

Before you take Accolate, tell your healthcare provider if you:

  • have liver problems
  • have any other medical conditions
  • are pregnant or plan to become pregnant. It is not known if Accolatewill harm your unborn baby. Talk to your healthcare provider if you are pregnant or plan to become pregnant.
  • are breastfeeding or plan to breastfeed. Accolatecan pass into your milk; it is not known whether Accolatemay harm your baby. Women who are breastfeeding should not take Accolate.

Tell your healthcare provider about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements.

Accolatemay affect the way other medicines work, and other medicines may affect how Accolateworks.

Especially tell your healthcare provider if you take:

  • warfarin sodium (Coumadin, Jantoven)
  • erythromycin (ERYC, ERY-TAB, PCE)
  • theophylline (Elixophyllin, Theo-24, Theochron, Theolair, Uniphyl)
  • fluconazole (Diflucan)

Know the medicines you take. Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine.

How should I take Accolate?

  • Take Accolate exactly as your healthcare provider tells you to take it.
  • Take Accolate regularly, even if you do not have asthma symptoms. Do not change your dose or stop taking Accolate without talking to your healthcare provider.
  • Do not stop taking or change the dose of your other asthma medicines unless your healthcare provider tells you to.
  • Take your prescribed dose of Accolate by mouth at least 1 hour before or 2 hours after meals.
  • Accolate does not treat the symptoms of a sudden asthma attack. Always have a short-acting beta2-agonist medicine (rescue inhaler) with you to treat sudden symptoms. If you do not have a rescue inhaler medicine, talk to your healthcare provider to have one prescribed for you.
  • If you take too much Accolate, call your healthcare provider or go to the nearest hospital emergency room right away.

What are the possible side effects of Accolate?

Accolate may cause serious side effects, including:

  • Severe liver problems. In some cases, these liver problems can lead to liver failure, the need for a liver transplant or death. Tell your healthcare provider right away if you have:
  • pain or tenderness in the right upper side of your stomach area (abdomen)
  • nausea
  • tiredness
  • itchiness
  • yellowing of your skin or the whites of your eyes
  • flu-like symptoms
  • loss of appetite
  • dark (tea colored) urine
  • Inflammation of your blood vessels. Rarely, this can happen in people with asthma who take Accolate. This usually, but not always, happens in people who also take a steroid medicine by mouth that is being stopped or the dose is being lowered. Tell your healthcare provider right away if you have:
    • a feeling of pins and needles or numbness of your arms or legs
    • flu like symptoms
    • rash
    • pain and swelling of your sinuses
  • Changes in behaviour or mood. Tell your healthcare provider if you have changes in your behaviour, problems sleeping or feel very sad.
  • Hypersensitivity reactions. Tell your healthcare provider if you have severe itching, breathing problems, skin rash, skin blisters, or skin redness, or swelling.

The most common side effects of Accolate in people 12 years and older include:

  • headache
  • infection
  • nausea
  • diarrhea
  • pain (generalized)

The most common side effects of Accolate in children 5 to 11 years include:

  • headache
  • stomach pain

Tell your healthcare provider if you have any side effect that bothers you or that does not go away.

These are not all of the possible side effects of Accolate. For more information, ask your healthcare provider or pharmacist.

Call your healthcare provider for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

You may also report side effects to Par Pharmaceutical, Inc. at 1-800-828-9393.

Accolate Images

General information about the safe and effective use of Accolate

Medicines are sometimes prescribed for purposes other than those listed in a Patient Information leaflet. Do not use Accolate for a condition for which it was not prescribed. Do not give Accolate to other people, even if they have the same symptoms that you have. It may harm them.

This Patient Information leaflet summarizes the most important information about Accolate. If you would like more information, talk with your healthcare provider. You can ask your pharmacist or healthcare provider for information about Accolatethat is written for healthcare professionals.

For more information, go to, or call 1-800-828-9393.

How should I store Accolate?

  • Store Accolate at 68°F to 77°F (20°C -25°C).
  • Keep Accolate tablets dry.
  • Keep Accolate in a tight closed container and keep Accolate out of the light.
  • Keep Accolate and all medicines out of the reach of children.

What are the ingredients in Accolate?

Active ingredient: zafirlukast

Inactive ingredients: croscarmellose sodium, lactose, magnesium stearate, microcrystalline cellulose, povidone, hypromellose, and titanium dioxide.

What do Accolate tablets look like?

  • the 10 mg tablet is white and round with “P” marked on one side, and “10” on the other.
  • the 20 mg tablet is white and round with “P” marked on one side, and “20” on the other.

Source: National Library of Medicine. Last updated December 16, 2015.