Catuaba Bark Extract: Natural Treatments

By Pierre Federkeil

A large amount of confusion exists today regarding the actual species of tree that is harvested in Brazilian forests and sold around the world as "catuaba." Experienced Brazilian harvesters will refer to two species: a "big catuaba" and a "small catuaba." The confusion thickens when relating these trees to approved botanical species names. "Small catuaba" is Erythroxylum catuaba (A. J. Silva ex. Raym.-Hamet - the name was accepted in 1936), which grows 2-4 m tall and sports yellow-to-orange flowers and, in Brazil, is referred to as catuaba. "Big catuaba," in the mahogany family, is Trichilia catigua (A. Juss.), which grows 6-10 m tall, has cream-colored flowers and - in Brazil - is referred to as catigu and angelim-rosa.

Moreover, three other (unapproved) botanical names for catuaba are used incorrectly in herbal commerce today: Juniperus brasiliensis (which is thought to refer to "small catuaba"), and Anemopaegma mirandum and Eriotheca candolleana, which are completely different species altogether. Anemopaegma is a huge tree in the Bignonia family, growing to 40 m tall and called catuaba-verdadeira in Brazil. This species of tree is now harvested and exported out of Brazil by inexperienced or unethical harvestors (resulting in the incorporation in herbal products sold in the U.S. today) as just "catuaba."

Erythroxylum catuaba and Trichilia catigua are the preferred Brazilian herbal medicine species, with the longest documented history of use as "big and little catuaba." Both types are used interchangeably in Brazilian herbal medicine systems for the same conditions.

Clinical studies on catuaba also have shown results related to its antibacterial and antiviral properties. A 1992 study indicated that an extract of catuaba (Erythoxlyum catuaba) was effective in protecting mice from lethal infections of Escherichia coli and Staphlococcus aureus, in addition to inhibiting HIV significantly.

The study found that the pathway of catuaba's anti-HIV activity stemmed (at least partially) from the inhibition of HIV absorption into cells, and suggested that catuaba had potential against opportunistic infections in HIV patients. A U.S. patent was granted (in 2002) to a group of Brazilian researchers for a catuaba bark extract (Trichilia catigua).

Catuapa bark contains alkaloids, tannins, resins, aromatic oils, falconoid and other constituents. Researchers in Japan discovered that catuapa contains powerful antiviral and antibacterial compounds. Rain-Tree.com states that a 1992 study indicated that catuaba extract was effective in protecting mice against E. coli and staph infection as well as significantly inhibiting HIV.

To date, no toxicity studies have been done on catuaba - but its long history of use in Brazil has reported no toxicity or ill effects. In fact, according to Dr. Meira Penna, the only side-effects are beneficial - erotic dreams and increased sexual desire! While no clinical research has validated the traditional use of catuaba as an aphrodisiac, it continues to be used widely for its ability to enhance sexual drive and increase libido in both men and women.

In the last several years, its popularity has grown in the North American herbal market, with various products (especially libido formulas) now available in health food stores. Catuaba is also showing up in other formulas for depression, stress and nervous disorders. (The jury's still out as to which species is being sold, however!) Interested consumers should seek a reputable manufacturer and product - with a verified plant source and botanical species for the herbal ingredient being sold. - 30414

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