See alsoGuaraná for Weight Control
Botanical name
Botanical name
Paullinia cupana
Parts used and where grown
Guaraná is an evergreen vine indigenous to the Amazon basin. The vast majority of guaraná is grown in a small area in northern Brazil. Guaraná gum or paste is derived from the seeds and is used in herbal preparations.
Guaraná has been used in connection with the following conditions (refer to the individual health concern for complete information):
Science Ratings - Health Concerns
* - Athletic performance
* - Fatigue
* - Weight loss and obesity
*** - Reliable and relatively consistent scientific data showing a substantial health benefit.
Parts used and where grown
Guaraná is an evergreen vine indigenous to the Amazon basin. The vast majority of guaraná is grown in a small area in northern Brazil. Guaraná gum or paste is derived from the seeds and is used in herbal preparations.
Guaraná has been used in connection with the following conditions (refer to the individual health concern for complete information):
Science Ratings - Health Concerns
* - Athletic performance
* - Fatigue
* - Weight loss and obesity
*** - Reliable and relatively consistent scientific data showing a substantial health benefit.
** - Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
* - For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support and/or minimal health benefit.
Historical or traditional use (may or may not be supported by scientific studies)
The indigenous people of the Amazon rain forest have used crushed guaraná seed as a beverage and a medicine. Guaraná was used to treat diarrhea, decrease fatigue, reduce hunger, and to help arthritis.1 It also has a history of use in treating hangovers from alcohol abuse and headaches related to menstruation.
Active constituents
Caffeine and the closely related alkaloids theobromine and theophylline make up the primary active constituents in guaraná. Caffeine’s effects are well known and include stimulating the central nervous system, increasing metabolic rate, and having a mild diuretic effect.2 One preliminary trial found no significant actions on thinking or mental function in humans taking guaraná.3 Guaraná also contains tannins, which act as astringents and may prevent diarrhea. However, this action has not been studied in human clinical trials.
How much is usually taken?
A cup of guaraná, prepared by adding 1/4–1/2 teaspoon (1–2 grams) of crushed seed or resin to 1 cup (250 ml) of water and boiling for ten minutes, can be consumed three times per day.4 Each cup may provide up to 50 mg of caffeine.
Are there any side effects or interactions?
As with any caffeinated product, guaraná may cause insomnia, trembling, anxiety, palpitations, and urinary frequency.5 Guaraná should be avoided during pregnancy and breast-feeding.
Historical or traditional use (may or may not be supported by scientific studies)
The indigenous people of the Amazon rain forest have used crushed guaraná seed as a beverage and a medicine. Guaraná was used to treat diarrhea, decrease fatigue, reduce hunger, and to help arthritis.1 It also has a history of use in treating hangovers from alcohol abuse and headaches related to menstruation.
Active constituents
Caffeine and the closely related alkaloids theobromine and theophylline make up the primary active constituents in guaraná. Caffeine’s effects are well known and include stimulating the central nervous system, increasing metabolic rate, and having a mild diuretic effect.2 One preliminary trial found no significant actions on thinking or mental function in humans taking guaraná.3 Guaraná also contains tannins, which act as astringents and may prevent diarrhea. However, this action has not been studied in human clinical trials.
How much is usually taken?
A cup of guaraná, prepared by adding 1/4–1/2 teaspoon (1–2 grams) of crushed seed or resin to 1 cup (250 ml) of water and boiling for ten minutes, can be consumed three times per day.4 Each cup may provide up to 50 mg of caffeine.
Are there any side effects or interactions?
As with any caffeinated product, guaraná may cause insomnia, trembling, anxiety, palpitations, and urinary frequency.5 Guaraná should be avoided during pregnancy and breast-feeding.
Drug Interactions
Certain medicines interact with guaraná: Some interactions may increase the need for guaraná (+), other interactions may be negative (-) and indicate guaraná should not be taken without first speaking with your physician or pharmacist, others may require further explanation (?). Refer to the individual drug article for specific details about an interaction.
Note: The following list only includes the generic or class name of a medicine. To find a specific brand name, use the Medicines index.
Caffeine (?)
Certain medicines interact with guaraná: Some interactions may increase the need for guaraná (+), other interactions may be negative (-) and indicate guaraná should not be taken without first speaking with your physician or pharmacist, others may require further explanation (?). Refer to the individual drug article for specific details about an interaction.
Note: The following list only includes the generic or class name of a medicine. To find a specific brand name, use the Medicines index.
Caffeine (?)
Source: www.cncahealth.com