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Description: A drug directed against malaria. The original antimalarial agent was quinine which took its name from the Peruvian Indian word "kina" meaning "bark
of the tree." A large and complex molecule, quinine is the most
important alkaloid found in cinchona bark. Until World War I, it was the
only effective treatment for malaria. In fact, quinine was the first
chemical compound to be successfully used to treat an infectious
disease.