Newport, the country’s leading menthol cigarette brand, represents a substantial portion of the market. Industry analysts suggest that restrictions could reshape the entire tobacco market landscape.

R.J. Reynolds Tobacco Co.’s Newport brand is by far the top-selling menthol-flavored cigarette in the U.S., and the No. 2 cigarette overall in the nation. It is also the most popular flavoring ...

The recent massive bust of illegal Newport cigarettes in Dorchester is “only the tip of the iceberg” for the illicit menthol market in the Bay State, according to a group that says menthol use ...