This Jan. 16, 2014, photo shows Keystone High School wrestler Logan Stiner during a match in Sheffield Village, Ohio. The Food and Drug Administration is warning consumers to avoid pure powdered caffeine sold on the Internet after Stiner died after consuming it. Even a teaspoon of the powder could be lethal — it is equivalent to 25 cups of coffee. (AP Photo/Steve Manheim, The Chronicle Telegram)

FDA: Powdered caffeine can be lethal

WASHINGTON (AP) — The Food and Drug Administration is warning consumers to avoid pure powdered caffeine sold on the Internet after the death…