CAMP HILL, Pa.--(BUSINESS WIRE)--Rite Aid Corporation (NYSE: RAD) today announced the completion of an amendment and extension of its existing senior secured credit facility, including an increased borrowing capacity of up to $3.0 billion, or up to $3.7 billion when the company repays its 8.00% Senior Secured Notes due 2020 in full (whether at maturity or pursuant to an early redemption) and an extension of the maturity to January 2020. The company expects, at current rates, to save approximate