Why Do Athletes Use It?*
Some athletes say that guaraná helps improve stamina.
What Do the Advocates Say?*
Guaraná contains a substance similar to caffeine, which could be responsible for caffeine-like effects such as improving endurance performance. However, no research has directly tested guaraná in athletes.
How Much Is Usually Taken by Athletes?
Some athletes take guaraná during their training; however, there is no scientific research to support this use.
As with any caffeinated product, guaraná may cause insomnia, trembling, anxiety, palpitations, and urinary frequency.1 Guaraná should be avoided during pregnancy and breast-feeding.
Interactions with Supplements, Foods, & Other Compounds
Interactions with Medicines
Certain medicines interact with this supplement.
|Some medicines may increase the need for this supplement.|
|Some medicines interact with this supplement, so they should not be taken together.|
|Some interactions between this supplement and certain medicines require more explanation. Click the link to see details.|
Note: The following list only includes the generic or class name of a medicine. To find a specific brand name, use the Medicines Index.
Botanical names: Paullinia cupana
Parts Used & 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.
- 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.
Our proprietary “Star-Rating” system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition. While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by the medical community, and whether studies have found them to be effective for other people.
For over a decade, our team has combed through thousands of research articles published in reputable journals. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.
This supplement has been used in connection with the following health conditions:
|Athletic Performance||Refer to label instructions||[1 star] Some athletes take guaraná, which contains caffeine, during their training, although there is no scientific research to support this use.|
|Obesity||Refer to label instructions||[1 star] Guaraná contains caffeine and the closely related alkaloids theobromine and theophylline, these compounds may curb appetite and increase weight loss.|
Traditional Use (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.
Resources to help you learn more about popular supplements for fitness and weight control:
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Available from URL: http://www.thorne.com/altmedrev/fulltext/bromelain1-4.html
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2011.