
The US Food and Drug Administration (FDA) is reviewing the safety of Merck & Co's anti-asthma drug Singulair (montelukast) following reports querying a potential link between the drug's use and changes to behaviour and mood, suicide, and suicidal thinking and behaviour.

The medication comes in tablet form and is taken by mouth once a day (in the evening, if used for asthma), although some people take it only before exercising (for treating exercise-induced asthma).

It is unclear if Singulair passes through breast milk; nor is it known what effects the drug could have on a young infant. If your healthcare provider recommends that you take Singulair while breastfeeding, be sure to watch for any side effects in your child.

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