Material: Leaves of small evergreen tree found near streams in
forests of Brazil, Argentina, and Paraguay.
Usage: Leaves steeped in hot water and drunk.
Active Constituents: Caffeine and other purines.
Effects: Stimulant. Not as upsetting to system as coffee or tea.
Contraindications: Long-term excessive use of caffeine may cause
nervousness, insomnia, habituation.
Supplier: MGH, health stores.