Beginning Tuesday (June 18), more than 50 million enrollees in the government health insurance program are eligible for Amazon’s RxPass, a Prime member benefit that allows for affordable access to common medications, free delivery each month and the ability to connect with a pharmacist around the clock.

The company said Medicare beneficiaries who take at least one medication available through RxPass could save approximately $70 per year, and a beneficiary who takes two or more medications could save even more. If every Medicare beneficiary was to use RxPass, Medicare spending would be reduced by close to $2 billion, while customer out-of-pocket spending would decrease as well, Amazon added.