Guarana
Plant Medicine, Excitantia, Caffeine plant
Guarana
Paullinia cupana
Guarana is the seed of an Amazonian Sapindaceae climber, cultivated by the Sateré-Mawé and Tupí of Brazil. The seed has a striking eye-like appearance — a brown pupil within a white aril, surrounded by a red fruit. Caffeine extraction by indigenous people predates coffee's discovery by many centuries.
Coffee, Yerba mate, Caffeine
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Summary
Classes
Plant Medicine, Excitantia, Caffeine plant
Common uses
Alertness0, Endurance0
Pharmacy
Preparations
Roasted seeds ground to powder, mixed with water; commercial syrups and energy drinks
Pharmacology
Routes
Oral
Purported mechanism
Highest natural caffeine content of any plant (2–7% by dry weight, ~2–4× coffee). Caffeine is bound to tannins, producing a slower release than pure coffee caffeine.