Biomedical engineering professor David Edwards said AeroShot is safe and does not contain common additives, like taurine, used to amplify the caffeine effect in common energy drinks. Each grey-and-yellow plastic canister contains 100 milligrams of caffeine powder, about the amount in a large cup of coffee, plus B vitamins.

But Democratic U.S. Sen. Charles Schumer of New York wants the U.S. Food and Drug Administration to review AeroShot, saying he fears it will be used as a club drug so that young people can drink until they drop. Schumer’s national press secretary did not immediately respond to calls for comment…

Once a user shoots a puff of calorie-free AeroShot into his or her mouth, the lemon-lime powder begins dissolving almost instantly. Each single-use container has up to six puffs.