Walgreen (WAG) yesterday defended ending its relationship with Express Scripts (ESRX) over...

|By:, SA News Editor

Walgreen (WAG) yesterday defended ending its relationship with Express Scripts (ESRX) over payment rates, saying a record 200K customers have signed up to a discount on membership of Walgreen's prescription savings club. However, rivals are heavily promoting their acceptance of ESRX’s drug cards in a bid to steal customers.