The FDA's proposed rule would slash nicotine levels in cigarettes, most cigars and other combustible tobacco products, but not vapes, hookahs or Zyn.

The Food and Drug Administration unveiled a proposal on Wednesday to limit the amount of nicotine allowed in cigarettes and some other combustible tobacco products, a final step for the agency before the Trump administration takes over next week.

After reviewing the scientific evidence, the agency has decided 20 ZYN nicotine pouch products can legally be sold in the US.