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A dried paste of the crushed seeds of Paullinia cupana (family Sapindaceae), a vine extensively cultivated in Brazil. It contains guaranine (caffeine), saponin, a volatile oil, and paullinitannic acid. Has been used to relieve headache.
[Native Brazilian word]


/gua·ra·na/ (gwah-rah´nah) [Tupi-Guarani] the Brazilian woody vine Paullinia cupana, or a dried paste prepared from its seeds which is used as a stimulant and tonic in folk medicine and for the treatment of headache in homeopathy.


(gwă-ră-nă′) [Native Brazilian word]
A stimulant derived from Paullinia cupana, a Brazilian plant used in folk remedies for its supposed effects on alertness and cognition. The plant contains caffeine and other chemicals, but has not been proven to enhance thinking, treat dementia, or alter any neuropsychiatric functions.


Because some guarana-based products have high levels of caffeine, care should be taken in their use to avoid caffeine overdose.

guarana (gwä·räˑ·n),

n Latin names:
Paullinia cupana, Paullinia sorbilis; part used: seeds; uses: antioxidant, stimulant, weight loss; precautions: pregnancy, lactation, patients with sensitivity to caffeine, high blood pressure, kidney disease, and heart disease. Also called
Brazilian cocoa, guarana gum, guarana paste, or
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The subsequent vegetational changes resulted in plains cottonwood, Russian olive, salt cedar, netleaf hackberry (Celtis reticulata), western soapberry (Sapindus drummundii), shinnery oak (Quercus havardii) and sand sage (Artemesia filifolia) becoming the dominant woody species (Correl & Johnston 1979).