Jesuit's Bark, also known as quinine, has been used for centuries to treat malaria and is derived from the bark of the Cinchona tree. Despite its effectiveness, it has been associated with a bitter taste and unpleasant side effects. There are several synonyms for Jesuit's Bark, including Peruvian Bark, Chinchona, and Quinquina. These names have similar origins and allude to the geographical location of the plant's origin in the Andes mountains of Peru. Malaria remains a significant public health problem worldwide, making Jesuit's Bark and its synonyms important resources in the fight against this lethal disease.