05 billion, on higher sales of its top seller, Singulair for asthma and allergies, plus diabetes drugs Januvia and Janumet and HIV drug Isentress. That offset some problem areas, including a big drop in sales of Gardasil, a vaccine against a virus that causes cervical cancer and genital warts that soon will face its first US competition.
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.
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