Sales Down, Discounts Up: Hepatitis C Market Feeling Zepatier Launch

As the third to market, Merck & Co. Inc.'s recently launched Zepatier brought in a modest $50m in sales during the first quarter – but the drug has had an outsized impact on the hepatitis C field, with competitors Gilead Sciences Inc. and AbbVie Inc. both citing the new competition among the reasons for their declining HCV product sales during the first quarter.