U.S. Food and Drug Administration officials plan to investigate whether inhalable caffeine sold in lipstick-sized canisters is safe for consumers and if its manufacturer was right to brand it as a dietary supplement.

AeroShot went on the market last month in Massachusetts and New York, and it's also available in France. Consumers put one end of the canister in their mouths and breathe in, releasing a fine powder that dissolves almost instantly. Each gray-and-yellow plastic canister contains B vitamins and 100 milligrams of caffeine, about the equivalent of a large cup of coffee.

AeroShot inventor, Harvard professor David Edwards, says the product is safe.

AeroShot didn't require FDA review before hitting the U.S. market because it's sold as a dietary supplement. But Sen. Charles Schumer (D-N.Y.) said he met with FDA Commissioner Dr. Margaret Hamburg and she agreed to review the safety and legality of AeroShot.

"I am worried about how a product like this impacts kids and teens, who are particularly vulnerable to overusing a product that allows one to take hit after hit after hit, in rapid succession," Schumer said.

Tom Hadfield, chief executive of Massachusetts-based Breathable Foods, which makes AeroShot, said the company will cooperate with the FDA and is confident the product will be found in compliance with FDA regulations. The firm said AeroShot is not recommended for those under 18 and is not marketed to children.

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