Quassia amara is a tropical tree native to South America, particularly found in countries like Brazil and Colombia. It belongs to the family Simaroubaceae and can grow up to 15 meters tall. The tree is known for its bitter compounds, primarily quassinoids, which are found in its bark and wood. These compounds have been traditionally used for medicinal purposes, including as a digestive aid and to treat fevers. The bitter extract from Quassia amara is also utilized in the production of herbal remedies and as a natural insect repellent. Additionally, it is sometimes used in the brewing of certain beverages, such as bitters, to enhance flavor. Its unique properties make it a valuable resource in both traditional and modern applications.