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,

Zyn and the retailers who sell the product have run afoul of regulators in recent years. The FDA in April of last year warned 119 retailers to stop selling Zyn to underage people, and the company was ordered to pay $1.2 million last year for violating Washington, D.C.’s smokeless tobacco ban.

Federal health officials are backing the health benefits of nicotine pouches, ruling that Philip Morris International’s Zyn can help adult smokers cut back or quit cigarettes.