•Caffeine common name for (1, 3, 7-trimethylxanthine (Heckman, Weil and de Mejia, 2010)
•Caffeine is a naturally occurring chemical compound found in plant constituents such as coffee and cocoa beans, tea leaves, guarana berries and the kola nut. (European Food Safety Authority, 2015)
•Stimulant, increase brain and nervous system activity. Reduction in tiredness. (Pietrangelo, 2018)
