First, CVS Health pulled tobacco from its store shelves. Now, it plans to make some customers think twice about filling prescriptions at other stores that still sell smokes.

The nation's second-largest drugstore chain is developing a new tobacco-free pharmacy network for clients of its Caremark pharmacy benefits management business.

The network would slap an extra co-payment on patients who fill their prescriptions at stores that still sell tobacco. That payment won't apply to prescriptions filled in the tobacco-free network, which would include CVS and Target locations nationally, as well as other pharmacies that abstain. Target Corp. gave up tobacco sales in 1996.

CVS national rivals Walgreen Co. and Rite Aid Corp. still sell tobacco.

The tobacco-free network will only be used by the pharmacy-benefit management customers that choose it.

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