First, they came for cigarettes. Now, vape pens are replacing vitamin pills, too.

The newest generation of smokers is hooked — on wellness, that is. With the e-cigarette market expected to balloon by 22 percent in the next four years, according to consumer firm Orbis Research, a growing number of vape manufacturers are expanding beyond nicotine and marketing e-cig cartridges fortified with trendy nutrients instead. [...]