Does dingulair cause anxiety or depression when taken for 2 months?

Singulair (montelukast) can cause: neuropsychiatric events, including anxiety & depression.The FDA requested that prescribing information include a precaution that post- marketing cases of agitation, aggression, anxiety, dream abnormalities, hallucinations, depression, insomnia, irritability, restlessness, & suicidal thinking & behavior have been reported.