Guayusa (why-you-suh). Swagger that lasts all day long. Guayusa is from the Kichwa tribe of Ecuador. Hunters drink it to sharpen their senses; medicine men drink it to encourage dreams at night. Despite having more caffeine than coffee, the balanced energy of guayusa does not cause jitters or impair sleep. This naturally smooth and great tasting miracle of the Amazon jungle is what you need get your swagger on.