The fastest-growing nicotine product in the U.S. has been increasingly hard to come by — and some customers aren’t happy. A shortage of Zyn, a smokeless nicotine pouch that users tuck into their lips ...

Zyn nicotine pouches have become a new symbol of American masculinity — and a surprising political lightning rod. Berkley Nahum pops a Zyn pouch outside Clandestino, a bar on the Lower East ...