CVS CVS

CVS Health has struck a deal to buy Aetna, the insurance giant. The combined companies would have more clout with drugmakers and would aim to bring more health care to consumers in retail clinics. Gene J. Puskar/AP hide caption

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Gene J. Puskar/AP

A customer makes a purchase using Apple Pay on her iPhone 6 at a Walgreens store in Times Square last Monday. The mobile payment service has now been blocked by CVS and Rite Aid. John Minchillo/AP Images for MasterCard hide caption

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John Minchillo/AP Images for MasterCard

A CVS pharmacy in Orlando, Fla., is one of more than 7,600 stores where the company will stop selling tobacco products by October. John Raoux/AP hide caption

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John Raoux/AP

If you're interested in buying Viagra, Pfizer, the drug's maker, will now sell it to you from its official website. William Vazquez/AP hide caption

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William Vazquez/AP