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Overview
Guarana (Paullinia cupana) is a plant native to the Amazon. It is a common ingredient of energy drinks and can be unsafe in large amounts.
Guarana contains caffeine. Caffeine works by stimulating the central nervous system, heart, and muscles. Guarana also contains theophylline and theobromine, which are chemicals similar to caffeine.
People take guarana by mouth for obesity, athletic performance, mental performance, to increase energy, and for many other reasons, but there is no good scientific evidence to support these uses. Guarana can also be unsafe when taken long-term in large amounts.
Guarana contains caffeine. Caffeine works by stimulating the central nervous system, heart, and muscles. Guarana also contains theophylline and theobromine, which are chemicals similar to caffeine.
People take guarana by mouth for obesity, athletic performance, mental performance, to increase energy, and for many other reasons, but there is no good scientific evidence to support these uses. Guarana can also be unsafe when taken long-term in large amounts.
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For the latest comprehensive data on this and every other natural medicine, health professionals should consult the Professional Version of NatMed. It is fully referenced and updated daily.
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