Catuaba is a medium-sized tree found in the Amazon forest in the northern part of Brazil. In Brazilian herbal medicine, catuaba bark is considered a central nervous system stimulant with aphrodisiac properties and a bark decoction is used for nervousness, poor memory, and sexual weakness. Apparently the Topi Indians have known about the sex-enhancing properties for many centuries, perhaps combining it with muira puama and other herbal aphrodisiacs. 20 Indigenous tribes of the Amazon Rainforest and city dwellers in Brazil have used catuaba bark for generations as a natural herbal remedy for libido enhancement. Catuaba and Muira Puama are the most famous of all Brazilian aphrodisiac plants. This double concentrated extract uses new extraction methods to concentrate and preserve the active ingredients in this high quality Amazon plant with the equivalent of 500 mg of bark per ml. of extract (30 drops).