 In the United States, guarana fruit powder and seed extract have not been determined for status as "generally recognized as safe" (GRAS) by the Food and Drug Administration, but rather are approved as food additives for flavor (but not non-flavor) uses.Guarana is used in sweetened or carbonated soft drinks and energy drinks, an ingredient of herbal teas or contained in dietary supplement capsules.South America obtains much of its caffeine from guarana.