• Blockbuster Asthma Drug Singulair Receives Generic Competition

    Generic versions of Merck's pharmaceutical blockbuster Singulair (montelukast sodium) are now available to consumers, making it the latest product to fall off the so-called 'patent cliff,' the US Food and Drug Administration (FDA) announced on 3 August . The drug is used by asthma and allergy sufferers to reduce inflammation, and was Merck's most lucrative, bringing in sales of up to $5 billion per year . The company is expected to lose much of its market share to its ...