Technology & Medicine › Printing & the scientific revolution › Columbian Exchange (crops, animals, diseases)
Cinchona bark (quinine)
c. 1630s (Peru); quinine isolated 1820· Invention or discovery· Germs, drugs & genetics
Mostly agreedGood evidence; some details, dates or numbers uncertain.
Bark of the Andean cinchona tree, the first effective treatment for malaria; its active drug, quinine, was isolated in 1820.
See it on the Technology & Medicine map →How it works
Jesuit missionaries in Peru learned in the 1620s–1630s that powdered cinchona bark stopped malarial fevers, and shipped it to Rome as 'Jesuit's bark.' Quinine kills the malaria parasite in the blood. In 1820 French chemists Pierre Pelletier and Joseph Caventou extracted pure quinine, allowing exact doses. From 1865 smuggled seeds let the Dutch grow cinchona in Java, which by the 1930s supplied most of the world's quinine. British colonists drank it in tonic water.
Why it mattered
Quinine let Europeans survive in malarial parts of Africa and Asia, aiding 19th-century colonization, and showed that a specific plant chemical could cure a specific disease.
How we know
Jesuit records from Lima and Rome, 17th-century medical texts, Pelletier and Caventou's 1820 paper, and Dutch plantation records from Java.
Still unknown or debated
Whether Andean peoples used the bark for fevers before Europeans arrived is debated. The tale of a cured Countess of Chinchón, behind the tree's name, is a legend.
Connections (2)
▸Columbian Exchange (crops, animals, diseases) brought to Europe Cinchona bark (quinine)Well documented
The connection
Contact with the Andes gave Europe its first effective malaria treatment. Jesuits in Peru learned that cinchona bark relieved fevers and shipped it to Rome by the 1630s. Malaria itself probably reached the Americas from the Old World, so the cure was found where the disease was a newcomer.
When and how
Lima, Peru, around 1630, where the Jesuit apothecary Agostino Salumbrino helped send the bark to Rome; it was sold across Europe by the 1650s.
How we know
Jesuit correspondence and 17th-century medical writings record the bark's arrival and use, including printed Roman instructions for dosing it from about 1650.
Debates and open questions
Who first discovered the bark's power, Andean healers or the Jesuits, is debated, and whether malaria existed in the Americas before 1492 is not fully settled.
▸Cinchona bark (quinine) prefigured the targeted cures of Salvarsan, the first 'magic bullet'Mostly agreed
The connection
Cinchona bark was the first medicine known to cure one specific disease, malaria, rather than just easing symptoms. Ehrlich built on that idea: he tried the dye methylene blue against malaria in 1891, then searched systematically for chemicals that would hit a single germ. Salvarsan, against syphilis, was that search's first big success.
When and how
Cinchona reached Europe from the Andes by the 1630s; quinine was isolated in Paris in 1820; Ehrlich worked in Berlin in 1891 and Frankfurt in 1909–10.
How sure are we?
Ehrlich's 1891 methylene blue paper is documented. The link is a line of ideas, a specific cure for a specific disease, rather than shared chemistry.
Debates and open questions
Exactly how quinine kills malaria parasites is still not fully settled, and historians differ on how much quinine, versus dye chemistry, shaped Ehrlich's thinking.