In their ongoing efforts to curb the epidemic of vaping among young people, the U.S. Food and Drug Administration (FDA) recently issued warning letters to 10 retailers and manufacturers who sell, manufacture, or import unauthorized electronic nicotine delivery system (ENDS) products—or e-cigarettes—targeted to youth or likely to be used by those under the age of 18.

If those companies receiving these letters do not stop selling these products, they risk additional FDA action, including potential monetary penalties.