Humans have always aimed to use substances for improving their cognitive, physical and sexual performances: ancient civilizations resorted to hallucinogens in the attempt to get into contact with their gods; the widespread use of caffeine in its various forms (caffeinated and energy drinks, tablets, etc.) and the more recent development of glutamate activators (1,2).
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http://www.clinicaterapeutica.it/ojs/index.php/ClinicaTerapeutica/article/view/420
La Clinica Terapeutica, [S.l.], v. 170, n. 3, p. e181 – e183, june 2019. ISSN 1972-6007.