Zafirlukast is used for the chronic treatment of asthma when other agents have failed to control persistent asthma alone. This medication is suitable for individuals that have already been taking zafirlukast as prescribed by an authorized healthcare provider.
Zafirlukast is an oral leukotriene receptor antagonist used as a maintenance treatment for persistent asthma that is not adequately controlled with inhaled corticosteroids alone. It works by blocking leukotrienes, inflammatory chemicals in the body that cause airway tightening, swelling, and mucus production. By reducing airway inflammation, Zafirlukast helps improve breathing, decrease asthma symptoms, and reduce the need for rescue inhalers. This medication is not intended for acute asthma attacks but rather for long-term management of chronic asthma.
Usage Instructions
Used as a maintenance therapy for persistent asthma
Taken on an empty stomach, either 1 hour before or 2 hours after meals
Typically must be taken consistently as prescribed for at least 1 to 2 months before assessing effectiveness
Not for sudden asthma attacks or emergency relief
Warnings & Precautions
May cause side effects such as headache, nausea, diarrhea, or infection risk
Rare but serious side effects may include liver dysfunction or mood changes; liver function monitoring may be recommended
Inform your healthcare provider if you have liver disease or take other medications that may interact with Zafirlukast
Continue using inhaled corticosteroids unless instructed otherwise by your provider
Do not stop or change dosing without consulting your healthcare professional
Zafirlukast Side Effects
Zafirlukast side effects may include: headache, dizziness, abdominal pain, diarrhea, nausea, vomiting, dyspepsia, back pain, weakness, depression, insomnia, abnormal dreams, hallucinations, elevation in liver enzymes; respiratory tract infection in patients >55 years old with coadministration of inhaled corticosteroids.
Consumer Information Use and Disclaimer
This information should not be used to decide whether or not to take this medicine or any other medicine. Only a healthcare provider has the knowledge and training to decide which medicines are right for you. TelyRx does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a limited summary of general information about the medicine’s uses from the patient education materials and is not intended to be comprehensive. This limited summary does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not intended to provide medical advice, diagnosis or treatment and does not replace information you may receive from your healthcare provider. For a more detailed summary of information about the risks and benefits of using this medicine, please review the entire patient education information you receive with the medication.
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