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Who should not take Singulair (montelukast)?

Singulair (montelukast) should not be taken by people with liver disease or those who are allergic to montelukast. If you have phenylketonuria (PKU), a disorder that requires a diet that's low in phenylalanine, you should not take the chewable tablet form of this medication. The chewable tablet contains aspartame that forms phenylalanine. While there are no indications that Singular could harm an unborn baby, be sure to tell your doctor if you become pregnant while taking this drug so it can be decided if you should change medications.

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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.