Amazon.com and caffeine powder distributors did n't provide proper warnings about the supplement 's dangers , resulting in the death of an Ohio high school student last year , the teen 's father said in a lawsuit filed Friday . Logan Stiner , 18 , was just days from graduating high school in northeast Ohio when , on May 27 , his brother found him unresponsive in the family 's home in LaGrange , southwest of Cleveland . A coroner ruled that Stiner died of cardiac arrhythmia and seizure due to acute caffeine toxicity . The amount of caffeine in his system was about 23 times greater than the level in a typical soda or coffee drinker . Scroll down for video . Cardiac arrest : Logan Stiner , 18 , a popular student who was voted prom king and was on the wrestling team , died in May after ingesting about 23 times the amount of caffeine found in a typical coffee or soda . Contentious : Stiner 's parents have claimed in a lawsuit the caffeine supplement their son bought on Amazon , called Hard Rhino , was not properly packaged pharmaceutical-grade powder . Family torn apart : Katie and Denis Stiner ( pictured with Logan , right , and younger son Dylan , left ) are suing Amazon.com and caffeine powder distributors . Stiner was a popular student who was voted prom king , wrestled and planned to study chemical engineering at the University of Toledo . The lawsuit names as defendants a classmate who gave Stiner the caffeine powder ; Amazon , which shipped it to the woman last March ; and six Arizona-based companies that the father 's attorney said packaged and sold the pharmaceutical-grade powder under the name Hard Rhino . The lawyer , Brian Balser , said Friday that the Arizona companies appear to be related . An Amazon.com Inc. spokesman declined to comment on the lawsuit . Messages left with the Arizona companies were not returned . There is no number listed for the former classmate . Balser said that after the death of a college student in Georgia in June and a consumer warning from the U.S. Food and Drug Administration , Hard Rhino stopped selling caffeine powder on Amazon . Balser said , however , that he ordered powdered caffeine from another company off the Internet two weeks ago . 'It 's still out there , ' he said . The lawsuit focuses on the Hard Rhino package label . Popular : Logan Stiner was just days away from graduating from high school when he overdosed on caffeine . The lawsuit says the package informed users that a cup of coffee contains about 1/32nd of a teaspoon of caffeine . The package label also warned that the powder 'can be dangerous if abused , ' and 'failure to follow safety guidelines can result in serious injury or death , ' the lawsuit said . The lawsuit claims that the label lacked specific instructions on proper use . 'The difference between life and death is a pinch and a smidgen , ' Balser said . Hard Rhino sold the powder as a dietary supplement , which allows the company to bypass FDA regulations , Balser said . The attorney said Amazon has a team of compliance specialists that is supposed to review products before they are allowed to be sold through the site . The lawsuit seeks damages of more than $ 25,000 . Denis and Katie Stiner have previously urged federal regulators to ban the sale of such substances . 'Before May 27 , 2014 , we had never heard of `` caffeine powder . '' Now we think about it every day , ' the Stiners said in a statement in December .
Logan Stiner , 18 , was found dead at his home in Ohio , LaGrange , in May . Died of cardiac arrhythmia and seizure due to acute caffeine toxicity . He had 23 times the amount of caffeine found in a typical coffee or soda . His parents filed a lawsuit against amazon the powder distributors Friday . They say the supplement was pharmaceutical grade and not packaged properly , causing their son to poison himself .