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Are there any risks in taking Singulair (montelukast)?

There are a wide variety of possible side effects to using Singulair (montelukast). Contact your doctor if any of these symptoms are particularly severe: lightheadedness, heartburn, fatigue, stomach pain and headaches. In addition, if you experience any of the following symptoms, contact your doctor right away: rash, fever, hives, numbness, painful or swollen sinuses, flu-like symptoms, itching, hoarseness, breathing problems, swelling in any area of the body, such as the face, legs, or hands. Although much less common, Singulair may also cause certain mental health changes, such as strange dreams, hallucinations, anxiety or suicidal thoughts. Discuss these symptoms with your doctor immediately.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.