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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
References in periodicals archive ?
Manipulation of ruminal fermentation and methane production by dietary saponins from mangosteen peel and soapberry fruit.
The soapberry bug is a neotropical and nearctic true bug that relies on the seeds of sapindaceous plants for development and reproduction (Carroll and Loye 1987).
To measure body size in field populations, adult soapberry bugs were collected at seed-bearing host plants in the field.
The woody plant community was similar to the San Marcos and Blanco rivers with the addition of osage-orange (Maclura pomifera), western soapberry (Sapindus saponaria), live oak (Quercus virginiana), and Texas sophora (Sophora affinis).
4% volume, 10% frequency) and northern red-backed vole (Clethrionomys rutilus; 1% volume, 3% frequency) in spring; longnose sucker (Catostomus catostomus) , unidentified fish remains (2% volume, 24% frequency) and ptarmigan (1% volume, 10% frequency) in early summer; bearberry (Arctostaphylos alp ma; 4% volume, 7% frequency) in late summer; and bearberry (1% volume, 3% frequency) and soapberry (Shepherdia canadensis; 1% volume, 3% frequency) in autumn.
121 of a mixture of soapberry fruit and mangosteen-peel increased total VFA and propionate concentration but that of acetate decreased.
alaxensis), bog birch (Betula glandulosa), and soapberry (Shepherdia canadensis) (Douglas 1974).
For two grizzlies feeding in Denali National Park on soapberry (Shepherdia canadensis) for a combined total of 18 foraging minutes (biting only, no walking), bite rates ranged from 32 to 81 bites/min, with an average of 63 [+ or -] 11 bites/min [mean [+ or -] 1 SD].
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).
In what appear to be later successional stands, canopy cover of the overstory tree layer is 60 to 90 percent with cedar elm, tepeguaje (Leucaena pulverulenta), western soapberry (Sapindus drummondii), sugarberry, honey mesquite (Prosopis glandulosa), anacua (Ehretia anacua) the dominant species (Tables 2 and 3).
In November of 1985, species such as Texas persimmon, western soapberry (Sapindus drummondii).