Guarana soda is nicknamed 'Brazilian champagne' and is a delicious mix of sweet flavors with apple and berry notes along with Guarana extract. The soda is made from the seeds yielded from Guarana flowers, which possess up to four times as much caffeine as coffee plants.  16-ounce cans contain 4-5% dose of caffeine. Although, the consumption of coffee is growing faster. Guarana is also known by the name of Paullinia Cupana.