Express Scripts Blocks Valeant Diabetes Drug in Cost Fight

  • Glumetza won't be covered when generic Metformin launches
  • Express Scripts says Valeant encourages use of high-cost drugs

Express Scripts Holding Co. is sharpening its fight against drugmaker Valeant Pharmaceuticals International Inc., in the latest turn between the two key protagonists in an ongoing U.S. debate over the price of pharmaceuticals.

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