Quinine is a medication used to treat malaria and babesiosis.[4] This includes the treatment of malaria due to Plasmodium falciparum that is resistant to chloroquine when artesunate is not available.[4][5] While sometimes used for nocturnal leg cramps, quinine is not recommended for this purpose due to the risk of serious side effects.[4] It can be taken by mouth or intravenously.[4] Malaria resistance to quinine occurs in certain areas of the world.[4] Quinine is also the ingredient in tonic water that gives it its bitter taste.[6]
https://en.wikipedia.org/wiki/Quinine
Quinidine is a medication that acts as a class I antiarrhythmic agent (Ia) in the heart.[1] It is a stereoisomer of quinine, originally derived from the bark of the cinchona tree. The drug causes increased action potential duration, as well as a prolonged QT interval.
As of 2019 it is no longer being manufactured for use in the United States.[2]
https://en.wikipedia.org/wiki/Quinidine
The quinones are a class of organic compounds that are formally "derived from aromatic compounds [such as benzene or naphthalene] by conversion of an even number of –CH= groups into –C(=O)– groups with any necessary rearrangement of double bonds, resulting in "a fully conjugated cyclic dione structure".[1][2][3] The archetypical member of the class is 1,4-benzoquinone or cyclohexadienedione, often called simply "quinone" (thus the name of the class). Other important examples are 1,2-benzoquinone (ortho-quinone), 1,4-naphthoquinone and 9,10-anthraquinone.
The name is derived from that of quinic acid (with the suffix "-one" indicating a ketone), since it is one of the compounds obtained upon oxidation of quinic acid.[4] Quinic acid, like quinine is obtained from cinchona bark, called quinaquina in Spanish.
https://en.wikipedia.org/wiki/Quinone
Quinolone may refer to:
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