Wikipedia
The name catuaba (pronounced [ka.two.'aba], a Guarani word that means "what gives strength to the Indian") is used for the infusions of the bark of a number of trees native to Brazil. The most widely used barks are derived from the trees Trichilia catigua and Erythroxylum vacciniifolium. Other catuaba preparations use the bark of trees from the following genera or families : Anemopaegma, Ilex, Micropholis, Phyllanthus, Secondatia, Tetragastris and species from the Myrtaceae.
It is often claimed that catuaba is derived from the tree Erythroxylum catuaba, but this tree has been described only once, in 1904, and it is not known today to what tree this name referred. E. catuaba is therefore not a recognised species (Kletter et al.; 2004).
Local synonyms are Chuchuhuasha, Tatuaba, Pau de Reposta, Piratancara and Caramuru. A commercial liquid preparation, Catuama, contains multiple ingredients, one of these being catuaba from Trichilia catigua.
An infusion of the bark is used in traditional Brazilian medicine as an aphrodisiac and central nervous system stimulant. These claims have not been confirmed in scientific studies. In catuaba is found a group of three alkaloids dubbed catuabine A, B and C.
A study by Manabe et al. (1992) showed that catuaba extracts from Catuaba casca (Erythroxylum catuaba Arr. Cam.) were useful in preventing potentially lethal bacterial infections and HIV infection in mice.
Catuaba extract is also used as a food flavouring in the British "traditional" cola drink manufactured by Fentimans, Fentiman's Curiosity Cola.