Jun 08, 2021 · Herbal medicines made from the bark of the Cinchona tree, and later quinine, have been widely used for centuries to treat medical conditions such as tropical malaria. More recently, chloroquine (CQ) and its synthetic derivatives have been used as antimalarials and to treat systemic lupus erythematosus, rheumatoid arthritis, and in the past 14 ...
Quinine is sourced from cinchona tree bark, a tree that is common in the Caribbean, Central America, South America, and some parts of Africa. Quinine itself has an interesting history. It was originally used as a way to fight malaria and provided in the form of a pill.