Kraft, The University of Texas at Dallas, United States Veronica Perez de la Cruz, Manuel Velasco Surez National Institute of Neurology and Neurosurgery, Mexico Updates Copyright 2026 Rodrguez-Nieto, Alvarez-Anacona, Mikkelsen, Li and Swinnen
2016 Feb
The Alliance for Pharmacy Compounding has developed a tool to help identify legitimate state-licensed pharmacies: APC: Is It Legit
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Guayusa is often associated to other stimulant herbs (green tea, coffee, guarana) in products presented as natural alternative to energy drinks, and is claimed to maintain wakefulness as well as induce a pleasant tranquility, since the effects of caffeine would be moderated by an high concentration of theanine, a claim unsubstantiated, explained the authors of the new study