Guarana
Introduction
This fact sheet provides basic information about Guarana. Guarana is an evergreen vine growing in the Amazon rainforest’s wild basins. The indigenous people of the Amazon rainforest have used crushed guarana seed as a beverage and a medicine. Guarana was used to treat diarrhea, decrease fatigue, reduce hunger, and help with 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
- The FDA has not evaluated Guarana for safety, effectiveness, or purity. Not all potential risks and/or advantages of guarana are known. Additionally, there are no regulated manufacturing standards in place for these compounds. There have been instances where herbal/health supplements have been sold that 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 following conditions:
- Heart problems or high blood pressure
- Kidney disease
- An overactive thyroid (hyperthyroidism)
- An anxiety or nervous disorder
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