Caffeine from Guarana
Caffeine is a central nervous system and metabolic stimulant, and is used both recreationally and medically to reduce physical fatigue and to restore alertness when drowsiness occurs. It produces increased wakefulness, faster and clearer flow of thought, increased focus, and better general body coordination. The amount of caffeine needed to produce effects varies from person to person, depending on body size and degree of tolerance.
As a dietary supplement, guarana is an effective stimulant; its seeds contain about twice the concentration of caffeine found in coffee beans (about 2–4.5% caffeine in guarana seeds compared to 1–2% for coffee beans).
Guarana is a plant that originated from Brazil. For millennia indigenous people used it as a natural medicine. This plant is associated with many positive effects, such as increased performance, burning of fat, disease prevention, stimulated brain activity and elevated potency. The short-term effects of guarana are based on the plant’s high content of caffeine and tannin. The extract of Guarana contains 3.5-5% caffeine. What the effects of the other ingredients are has not yet been determined. Products containing guarana have a different impact than other caffeinated products. Any other effects that have been associated with guarana, have not been proved yet scientifically. Possible side effects related to guarana are the same as for any other caffeinated product.