The pouches are used by less than 2% of US teens, the FDA said in granting the application allowing them to continue to be sold.

The U.S. Food and Drug Administration formally authorized Zyn nicotine pouches for sale after conducting an "extensive scientific review" about their safety.

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.