The Food and Drug Administration Thursday authorized marketing of 20 nicotine pouches — the first time the products have been greenlit by the agency. Nicotine pouches are tobacco-free sachets filled with nicotine and flavorings that are held between the gums and lips similar to snus,

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

The FDA authorized the marketing of 20 Zyn products on Thursday, marking the first allowance for the fast-growing nicotine pouches.