Question 1

What is Zafirlukast?

Accepted Answer

Zafirlukast belongs to a class of drugs called leukotriene receptor antagonists. It functions by interfering with the action of leukotrienes, which are chemicals released by the body that contribute to inflammation and constriction of the airways.

By preventing these chemicals from binding to their receptors, the medication helps to reduce swelling in the lungs and keep the breathing passages open. This action assists in the long-term maintenance of clear airways.

Question 2

What is Zafirlukast used for?

Accepted Answer

Zafirlukast is used to treat asthma.

Question 3

How does Zafirlukast work?

Accepted Answer

Mechanism of Action

Zafirlukast belongs to a class of medications known as leukotriene receptor antagonists. It works by interfering with the activity of leukotrienes, which are chemicals the body releases when it encounters an asthma trigger, such as pollen, pet dander, or cold air.

When leukotrienes are released, they cause several physical reactions in the respiratory system:

Airway Swelling: They cause inflammation and swelling in the lining of the lungs.

Muscle Tightening: They cause the muscles surrounding the airways to constrict, making the passages narrower.

Mucus Production: They increase the production of fluid and mucus in the lungs.

Zafirlukast works by binding to the receptors that these chemicals normally use. By blocking these receptors, the medication prevents leukotrienes from causing inflammation and constriction. This helps keep the airways open and reduces the frequency and severity of asthma symptoms like wheezing, coughing, and shortness of breath.

It is important to note that zafirlukast is a maintenance medication designed for long-term prevention. Because it works by blocking the biological pathway of inflammation rather than providing immediate muscle relaxation, it will not stop an asthma attack that has already started.

Question 4

What are the brand names for Zafirlukast?

Accepted Answer

Zafirlukast is sold under the brand name Accolate .

Question 5

What are the active ingredients in Zafirlukast?

Accepted Answer

The active ingredient in Zafirlukast is zafirlukast .

Question 6

What are the side effects of Zafirlukast?

Accepted Answer

Common side effects of Zafirlukast may include:

Headache

Nausea

Diarrhea

Always consult with a healthcare professional about potential side effects.

Question 7

What drug class is Zafirlukast?

Accepted Answer

Zafirlukast belongs to the leukotriene receptor antagonist drug class.

Question 8

What is the dosage of Zafirlukast and how do I take it?

Accepted Answer

How to Take Zafirlukast

Zafirlukast is an oral tablet taken by mouth. It is typically prescribed to be taken twice daily, usually in the morning and evening.

Timing and Food

This medication should be taken on an empty stomach to ensure it is absorbed correctly. Plan to take your dose at least one hour before or two hours after eating.

Consistency of Use

Take the medication at the same times each day to maintain a steady level in your body.

Continue taking zafirlukast even if you feel well and do not have active asthma symptoms.

This medication is for prevention and long-term management; it will not work fast enough to treat a sudden asthma attack. Always have a rescue inhaler available for acute symptoms.

Missed Dose

If you miss a dose, take it as soon as you remember. If it is nearly time for your next dose, skip the missed dose and return to your regular schedule. Do not take extra medicine to make up for a missed dose.

Question 9

Is Zafirlukast safe during pregnancy and breastfeeding?

Accepted Answer

Pregnancy

There are no adequate and well-controlled studies of zafirlukast in pregnant women. Animal research involving high doses of the medication did not show evidence of harm to the fetus; however, animal studies do not always predict human response. This medication should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus. It is important to inform your healthcare provider if you are pregnant or planning to become pregnant while taking this medication.

Breastfeeding

Zafirlukast is known to pass into human breast milk. Because of the potential for serious adverse reactions in nursing infants, a decision must be made whether to stop breastfeeding or stop taking the medication. Healthcare providers will typically weigh the importance of the drug to the mother against the potential risks to the infant when making this recommendation. You should consult your doctor if you are breastfeeding or plan to breastfeed.

Question 10

What forms and strengths does Zafirlukast come in?

Accepted Answer

Zafirlukast is manufactured as a tablet for oral administration. It is available as both a brand-name medication and as a generic drug.

Oral tablet

Question 11

What is the FDA approval status of Zafirlukast?

Accepted Answer

FDA Approval and Indications

Zafirlukast was first approved by the U.S. Food and Drug Administration (FDA) in 1996. It is indicated for the prophylaxis and chronic treatment of asthma. It is important to note that zafirlukast is not indicated for the reversal of bronchospasm in acute asthma attacks, including status asthmaticus.

Regulatory Safety Information

The FDA-approved labeling for zafirlukast includes several important safety warnings and precautions:

Hepatotoxicity: Cases of liver injury, including symptomatic hepatitis and liver failure, have been reported. Healthcare providers may monitor liver function through blood tests during treatment.

Neuropsychiatric Events: While zafirlukast does not carry the same boxed warning as montelukast, reports of neuropsychiatric events such as insomnia, agitation, and depression have been documented. Patients should be monitored for changes in behavior or mood.

Eosinophilic Conditions: In rare cases, patients may present with systemic eosinophilia, sometimes presenting with clinical features of vasculitis consistent with Churg-Strauss syndrome.

Generic Availability

Zafirlukast is available as a generic medication. Generic versions are required to meet the same FDA standards for bioequivalence, quality, and strength as the original brand-name version, Accolate.

Question 12

What should I know about Zafirlukast and cost?

Accepted Answer

Generic Availability

Zafirlukast is available as a generic medication. Generic drugs are required to meet the same quality and safety standards as brand-name versions but are usually available at a lower cost.

Insurance Coverage

Most insurance plans provide coverage for the generic form of zafirlukast. Out-of-pocket expenses will depend on the individual's insurance policy, including specific copay tiers or deductibles.

Cost Factors

The price of zafirlukast may vary depending on the pharmacy used. Patients are encouraged to compare prices at different locations or inquire about prescription discount programs that may help reduce the total cost.

Zafirlukast

Medication Quick Facts

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Side Effects

Warnings & Precautions

Dosage & How to Take

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