Amazon to enter drug business, to buy online pharmacy PillPack for $1 bn Inc said on Thursday it would buy small online pharmacy PillPack, a move that will put the world's biggest retailer in direct competition with drugstore chains, drug distributors and pharmacy benefit managers.

The potential of Amazon's move to disrupt major players across the drug supply chain on a nationwide level prompted a selloff in shares of potential future rivals, while sending its own shares up 2 per cent. PillPack supplies pre-sorted prescription drugs and other services for people who take multiple.

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