Little pouches of nicotine sold by the brand ZYN were given the green light for marketing this week through the U.S. Food and Drug Administration’s premarket tobacco product application (PMTA) pathway.

FDA authorizes Zyn nicotine pouches, citing public health benefits for adult smokers, despite concerns over flavored products' appeal to teens.

The Food and Drug Administration OK'd 10 Zyn flavors, including coffee, mint and menthol. It's the first time regulators have authorized sales of nicotine pouches, which are the fastest-growing segment of the U.S. tobacco market.