Guarana is a plant that is indigeneous in the Amazonian forest and was used by the native people for centuries. Guarana features large leaves and clusters of flowers, and is best known for the seeds from its fruit that look like eyeballs.
The active ingredient in guarana was formerly called guaranine, but was later found to be caffeine. Guarana has one of the highest caffeine contents of all plants (up to 7%). Guarana also has a high level of vitamins, minerals such as calcium, magnesium, iron, potassium, phosphor, some trace elements such as selenium and strontium, as well as amino acids.
