Montelukast
Montelukast may cause serious or life-threatening mental health changes while you are taking this medication or after treatment has stopped. Tell your doctor if you have or have ever had any type of mental illness. However, you should know that it is possible to develop these changes in mental health and behavior even if you have never had any mental health problems in the past. You should call your doctor right away and stop taking montelukast if you experience any of the following symptoms: agitation, aggressive behavior, anxiety, irritability, difficulty paying attention, memory loss or forgetfulness, confusion, unusual dreams, hallucinations (seeing things or hearing voices that do not exist), repeating thoughts that you cannot control, depression, difficulty falling asleep or staying asleep, restlessness, sleep walking, suicidal thoughts or actions (thinking about harming or killing yourself or planning or trying to do so), or tremor (uncontrollable shaking of a part of the body). Be sure that your family or caregiver knows which symptoms may be serious so they can call the doctor if you are unable to seek treatment on your own.
🔔 Why is this medication prescribed?
Montelukast is used to prevent wheezing, difficulty breathing, chest tightness, and coughing caused by asthma in adults and children 12 months of age and older. Montelukast is also used to prevent bronchospasm (breathing difficulties) during exercise in adults and children 6 years of age and older. Montelukast is also used to treat the symptoms of seasonal (occurs only at certain times of the year), allergic rhinitis (a condition associated with sneezing and stuffy, runny or itchy nose) in adults and children 2 years of age and older, and perennial (occurs all year round) allergic rhinitis in adults and children 6 months of age and older. Montelukast should be used to treat seasonal or perennial allergic rhinitis only in adults and children who cannot be treated with other medications. Montelukast is in a class of medications called leukotriene receptor antagonists (LTRAs). It works by blocking the action of substances in the body that cause the symptoms of asthma and allergic rhinitis.
🔔 How should this medicine be used?
Montelukast comes as a tablet, a chewable tablet, and granules to take by mouth. Montelukast is usually taken once a day with or without food. When montelukast is used to treat asthma, it should be taken in the evening. When montelukast is used to prevent breathing difficulties during exercise, it should be taken at least 2 hours before exercise. If you are taking montelukast once a day on a regular basis, or if you have taken a dose of montelukast within the past 24 hours, you should not take an additional dose before exercising. When montelukast is used to treat allergic rhinitis, it may be taken at any time of day. Take montelukast at around the same time every day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take montelukast exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
If you are giving the granules to your child, you should not open the foil pouch until your child is ready to take the medication. There are several ways that you can give the granules to your child, so choose the one that works best for you and your child. You may pour all of the granules directly from the packet into your child’s mouth to be swallowed immediately. You may also pour the entire packet of granules onto a clean spoon and place the spoonful of medication in your child’s mouth. If you prefer, you may mix the entire packet of granules in 1 teaspoon (5 mL) of cold or room temperature baby formula, breast milk, applesauce, soft carrots, ice cream, or rice. You should not mix the granules with any other foods or liquids, but your child may drink any liquid right after he or she takes the granules. If you mix the granules with one of the allowed foods or drinks, use the mixtures within 15 minutes. Do not store unused mixtures of food, formula, or breast milk and the medication.
Do not use montelukast to treat a sudden attack of asthma symptoms. Your doctor will prescribe a short-acting inhaler to use during attacks. Talk to your doctor about how to treat symptoms of a sudden asthma attack. If your asthma symptoms get worse or if you have asthma attacks more often, be sure to call your doctor.
If you are taking montelukast to treat asthma, continue to take or use all other medications that your doctor has prescribed to treat your asthma. Do not stop taking any of your medications or change the doses of any of your medications unless your doctor tells you that you should. If your asthma is made worse by aspirin, do not take aspirin or other nonsteroidal anti-inflammatory drugs (NSAIDs) during your treatment with montelukast.
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Montelukast controls the symptoms of asthma and allergic rhinitis but does not cure these conditions. Continue to take montelukast even if you feel well. Do not stop taking montelukast without talking to your doctor.
Ask your pharmacist or doctor for a copy of the manufacturer’s information for the patient.
