Walgreens to buy Rite-Aid

As companies throughout the universe of the health care industry accelerate the pace of consolidation, two of the country’s biggest drugstore chains have agreed to combine to create a new giant.

Walgreens Boots Alliance said on Tuesday that it would buy Rite Aid for more than $9.4 billion in cash, significantly bolstering its influence with drug makers and pharmacy benefit managers.

But the combination may draw a skeptical eye from government regulators concerned about the retail pharmacy market effectively shrinking to only a few big chains.

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