Herb Library: Natural Herbs and Herbal Supplements Directory: Guarana





This fact sheet provides basic information about Guarana. Guarana is an evergreen vine found growing in the wild basins of the Amazon rain forests. The indigenous people of the Amazon rain forest have used crushed guarana seed as a beverage and a medicine. Guarana was used to treat diarrhea, decrease fatigue, reduce hunger, and to help arthritis.

Common Names

Guarana, Paullinia, Brazilian Cocoa, Guarana Bread, Guarana Paste or Gum, Zoom

Latin Names

Paullinia cupana

What It Is Used For

  • Guarana contains very high concentrations of caffeine and has been used as a stimulant and appetite suppressant.

How It Is Used

Guarana is usually taken as a powder, mixed with water or another beverage.

What the Science Says

  • Guarana has not been evaluated by the FDA for safety, effectiveness, or purity. All potential risks and/or advantages of guarana may not be known. Additionally, there are no regulated manufacturing standards in place for these compounds. There have been instances where herbal/health supplements have been sold which were contaminated with toxic metals or other drugs. Herbal/health supplements should be purchased from a reliable source to minimize the risk of contamination.

Side Effects and Cautions

  • Guarana contains a large amount of caffeine which may be problematic if used by people with any of the conditions listed: heart problems or high blood pressure, kidney disease, an overactive thyroid (hyperthyroidism), or an anxiety or nervous disorder.


InfoStarBase Portal of Information on Living Green and Healthy Living