Criticism of Coca-Cola has arisen from various groups around the world, concerning a variety of issues, including health effects, environmental issues, and business practices. The drink's coca flavoring, and the nickname "Coke", remain a common theme of criticism due to the relationship with the illegal drug cocaine. In 1911, the US government seized 40 barrels and 20 kegs of Coca-Cola syrup in Chattanooga, Tennessee, alleging the caffeine in its drink was "injurious to health", leading to amended food safety legislation.[181]