The U.S. Supreme Court on Wednesday largely backed the U.S. Food and Drug Administration's refusal to let two e-cigarette companies sell flavored vape products that regulators consider a health risk to youths.

The U.S. Supreme Court upheld a series of decisions on Thursday by the US Food and Drug Administration to keep flavored vaping products off the market. This was a rare win for government regulators that could make it harder for people across the country to get these products.

The US Supreme Court ruled unanimously Wednesday that health authorities acted properly when they blocked e-cigarette companies from marketing fruit- and dessert-flavored flavors.