What is Zafirlukast: Uses, Warnings & Interactions

How to take Zafirlukast

• Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

• Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

• Take this medicine on an empty stomach at least 1 hour before or 2 hours after a meal.

• Your doctor will tell you how much medicine to use. Do not use more than directed.

• Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

• Your doctor will tell you how much medicine to use. Do not use more than directed.

• Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

• Take this medicine on an empty stomach at least 1 hour before or 2 hours after a meal.

• Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

• Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

What to do if you miss a dose of Zafirlukast

Zafirlukast contraindications

• This medicine is not right for everyone. Do not use if you had an allergic reaction to zafirlukast, or if you have liver disease (including cirrhosis).

Zafirlukast warnings

• Call your doctor if your symptoms do not improve or if they get worse.

• Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

• This medicine may cause the following problems:Liver problemsChurg-Strauss syndrome

• Tell your doctor if you are pregnant or breastfeeding, or if you have liver disease.

• This medicine will not stop an asthma attack that has already started. Your doctor may prescribe another medicine for you to use in case of an acute asthma attack.

• Inhalation routeIf any of your asthma medicines do not seem to be working as well as usual, call your doctor right away. Do not change your doses or stop using your medicines without asking your doctor.

• Inhalation routeIf you use a corticosteroid medicine to control your asthma, keep using it as instructed by your doctor.

• Keep all medicine out of the reach of children. Never share your medicine with anyone.

Zafirlukast interactions

• Some foods and medicines can affect how zafirlukast works. Tell your doctor if you are using any of the following:AspirinErythromycinFluconazoleTheophyllineSteroid medicineBlood thinner (such as warfarin)

• This medicine will not stop an asthma attack that has already started. Your doctor may prescribe another medicine for you to use in case of an acute asthma attack.

• This medicine may cause the following problems:Liver problemsChurg-Strauss syndrome

• Keep all medicine out of the reach of children. Never share your medicine with anyone.

• Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

• Call your doctor if your symptoms do not improve or if they get worse.

• Inhalation routeIf any of your asthma medicines do not seem to be working as well as usual, call your doctor right away. Do not change your doses or stop using your medicines without asking your doctor.

• Inhalation routeIf you use a corticosteroid medicine to control your asthma, keep using it as instructed by your doctor.