Supports energetic alertness Easy to swallow coated caplets Suitable for vegetarians & vegans Guarana is an evergreen vine native to the Amazon region, and is a natural source of caffeine. Guarana naturally contains additional phytochemicals, such as saponins and tannins. Supports energetic alertness Easy to swallow coated caplets Suitable for vegetarians & vegans Guarana is an evergreen vine native to the Amazon region, and is a natural source of caffeine. Guarana naturally contains additional phytochemicals, such as saponins and tannins.