Audience: Pulmonology healthcare professionals

FDA provided healthcare professionals with updated information on the original March 2008 early communication and January 2009 follow-up communication about the ongoing safety review for the leukotriene inhibitors, montelukast, zafirlukast and zileuton. Neuropsychiatric events have been reported in some patients taking montelukast (Singulair), zafirlukast (Accolate), and zileuton (Zyflo and Zyflo CR).

FDA has requested that manufacturers include a precaution in the drug prescribing information (drug labeling). The reported neuropsychiatric events include postmarket cases of agitation, aggression, anxiousness, dream abnormalities and hallucinations, depression, insomnia, irritability, restlessness, suicidal thinking and behavior (including suicide), and tremor. FDA recommends that:

  • Patients and healthcare professionals should be aware of the potential for neuropsychiatric events with these medications.
  • Patients should talk with their healthcare providers if these events occur.
  • Healthcare professionals should consider discontinuing these medications if patients develop neuropsychiatric symptoms.


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