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.

ZYN pouches contain no tobacco, only nicotine, offering a potentially less harmful option for tobacco users, with lower levels of cancer-causing constituents than traditional tobacco products.