Horizon Slams Express Scripts Amid Pharmacy Dispute
Specialty drugmaker Horizon Pharma (HZNP) fell sharply in early trading Wednesday after pharmacy benefit manager Express Scripts (ESRX) sued it for allegedly unpaid rebates and cut a specialty pharmacy Horizon had been using out of its network. Express Scripts had been reviewing what it calls “captive” specialty pharmacies ever since allegations of misconduct emerged last month against Philidor, a specialty pharmacy whose sole customer was Valeant