The well-known stimulant from the Brazilian rain forest used by Tupi-Guarani tribe who use the fruit in traditional medicine. Guarana contains guaranine, a substance similar to caffeine, which stimulates the brain and improves alertness.
It’s energizing effects are more powerful as compared to coffee, since the guarana is released into the body much slower than coffee, providing sustained energy. It stimulates the central nervous system directly and can be taken in small doses to increase the body’s energy levels, fight fatigue, and improve mental performance.
Guarana is used in some weight loss supplements and energy drinks to reduce the desire to eat as it is a natural appetite suppressant. It is tolerated better by the body because it is not water soluble and is therefore released into the bloodstream more slowly.