U.S. Food and Drug Administration officials plan to investigate whether inhalable caffeine sold in small canisters is safe for consumers.
AeroShot went on the market last month in Massachusetts and New York. It's also available in France. Each canister contains the caffeine equivalent of a large cup of coffee.
AeroShot didn't require FDA review because it's sold as a dietary supplement. But New York's U.S. Sen. Charles Schumer is concerned about overuse of the product, particularly by young people, and says FDA officials have agreed to review its safety.
Manufacturer Breathable Foods says AeroShot is safe.