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Quinine structure.svg
Clinical data
Pronunciation US: /ˈkwnn/ , /kwɪˈnn/ or UK: /ˈkwɪnn/ KWIN-een
Trade names Qualaquin, Quinate, Quinbisul, others
AHFS/Drugs.com Monograph
MedlinePlus a682322
License data
  • AU: D
  • US: C (Risk not ruled out)
    Routes of
    By mouth, intramuscular, intravenous, rectal
    ATC code
    Legal status
    Legal status
    Pharmacokinetic data
    Protein binding 70–95% [1]
    Metabolism Liver (mostly CYP3A4 and CYP2C19-mediated)
    Elimination half-life 8–14 hours (adults), 6–12 hours (children) [1]
    Excretion Kidney (20%)
    CAS Number
    PubChem CID
    CompTox Dashboard (EPA)
    ECHA InfoCard 100.004.550 OOjs UI icon edit-ltr-progressive.svg
    Chemical and physical data
    Formula C20H24N2O2
    Molar mass 324.424 g·mol−1
    3D model (JSmol)
    Melting point 177 °C (351 °F)
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    Quinine is a medication used to treat malaria and babesiosis. [2] This includes the treatment of malaria due to Plasmodium falciparum that is resistant to chloroquine when artesunate is not available. [2] [3] While used for restless legs syndrome, it is not recommended for this purpose due to the risk of side effects. [2] It can be taken by mouth or used intravenously. [2] Malaria resistance to quinine occurs in certain areas of the world. [2] Quinine is also the ingredient in tonic water that gives it its bitter taste. [4]


    Common side effects include headache, ringing in the ears, trouble seeing, and sweating. [2] More severe side effects include deafness, low blood platelets, and an irregular heartbeat. [2] Use can make one more prone to sunburn. [2] While it is unclear if use during pregnancy causes harm to the baby, use to treat malaria during pregnancy is still recommended. [2] Quinine is an alkaloid, a naturally occurring chemical compound. [2] How it works as a medicine is not entirely clear. [2]

    Quinine was first isolated in 1820 from the bark of a cinchona tree. [2] [5] [6] Bark extracts have been used to treat malaria since at least 1632. [7] It is on the World Health Organization's List of Essential Medicines, the safest and most effective medicines needed in a health system. [8] The wholesale price in the developing world is about US$1.70 to $3.40 per course of treatment. [9] In the United States a course of treatment is more than $200. [10]



    As of 2006, it is no longer recommended by the World Health Organization (WHO) as a first-line treatment for malaria, and it should be used only when artemisinins are not available. [11] [12] [13] [14] Quinine is also used to treat lupus and arthritis.

    Quinine was frequently prescribed as an off-label treatment for leg cramps at night, but this has become less common due to a warning from the US Food and Drug Administration (FDA) that this practice is associated with life-threatening side effects. [15] [16] [17]

    Available forms

    Quinine is a basic amine and is usually provided as a salt. Various existing preparations include the hydrochloride, dihydrochloride, sulfate, bisulfate and gluconate. In the United States, quinine sulfate is commercially available in 324-mg tablets under the brand name Qualaquin.

    All quinine salts may be given orally or intravenously (IV); quinine gluconate may also be given intramuscularly (IM) or rectally (PR). [18] [19] The main problem with the rectal route is that the dose can be expelled before it is completely absorbed; in practice, this is corrected by giving a further half dose. No injectable preparation of quinine is licensed in the US; quinidine is used instead. [20] [21]

    Quinine base in various salts
    NameQuinine base equivalence
    Quinine base100 mg
    Quinine bisulfate169 mg
    Quinine dihydrochloride122 mg
    Quinine gluconate160 mg
    Quinine hydrochloride111 mg
    Quinine sulfate dihydrate [(quinine)2H2SO4∙2H2O]121 mg


    Tonic water, in normal light and ultraviolet "black light". The quinine content of tonic water causes it to fluoresce under black light. Tonic water uv.jpg
    Tonic water, in normal light and ultraviolet "black light". The quinine content of tonic water causes it to fluoresce under black light.

    Quinine is a flavor component of tonic water and bitter lemon drink mixers. On the soda gun behind many bars, tonic water is designated by the letter "Q" representing quinine. [22]

    According to tradition, the bitter taste of anti-malarial quinine tonic led British colonials in India to mix it with gin, thus creating the gin and tonic cocktail, which is still popular today. [23] Nowadays, the amount of quinine in tonic is much lower and drinking it against malaria is ineffective. In the US, quinine is listed as an ingredient in some Diet Snapple flavors, including Cranberry-Raspberry.

    In France, quinine is an ingredient of an apéritif known as quinquina , or "Cap Corse," and the wine-based apéritif Dubonnet. In Spain, quinine ("Peruvian bark") is sometimes blended into sweet Malaga wine, which is then called "Malaga Quina". In Italy, the traditional flavoured wine Barolo Chinato is infused with quinine and local herbs and is served as a digestif . In Canada and Italy, quinine is an ingredient in the carbonated chinotto beverages Brio and San Pellegrino. In Scotland, the company A.G. Barr uses quinine as an ingredient in the carbonated and caffeinated beverage Irn-Bru. In Uruguay and Argentina, quinine is an ingredient of a PepsiCo tonic water named Paso de los Toros. In Denmark, it is used as an ingredient in the carbonated sports drink Faxe Kondi made by Royal Unibrew.

    As a flavoring agent in beverages, quinine is limited to less than 83 parts per million in the United States, and 100mgl in the European Union. [24] [25] [26]


    Quinine (and quinidine) are used as the chiral moiety for the ligands used in Sharpless asymmetric dihydroxylation as well as for numerous other chiral catalyst backbones. Because of its relatively constant and well-known fluorescence quantum yield, quinine is used in photochemistry as a common fluorescence standard. [27] [28]


    Because of the narrow difference between its therapeutic and toxic effects, quinine is a common cause of drug-induced disorders, including thrombocytopenia and thrombotic microangiopathy. [29] Even from minor levels occurring in common beverages, quinine can have severe adverse effects involving multiple organ systems, among which are immune system effects and fever, hypotension, hemolytic anemia, acute kidney injury, liver toxicity, and blindness. [29] In people with atrial fibrillation, conduction defects, or heart block, quinine can cause heart arrhythmias, and should be avoided.[ citation needed ]

    Quinine can cause hemolysis in G6PD deficiency (an inherited deficiency), but this risk is small and the physician should not hesitate to use quinine in people with G6PD deficiency when there is no alternative. [30]

    Adverse effects

    Quinine can cause unpredictable serious and life-threatening blood and cardiovascular reactions including low platelet count and hemolytic-uremic syndrome/thrombotic thrombocytopenic purpura (HUS/TTP), long QT syndrome and other serious cardiac arrhythmias including torsades de pointes, blackwater fever, disseminated intravascular coagulation, leukopenia, and neutropenia. Some people who have developed TTP due to quinine have gone on to develop kidney failure. [30] It can also cause serious hypersensitivity reactions include anaphylactic shock, urticaria, serious skin rashes, including Stevens-Johnson syndrome and toxic epidermal necrolysis, angioedema, facial edema, bronchospasm, granulomatous hepatitis, and itchiness. [30]

    The most common adverse effects involve a group of symptoms called cinchonism, which can include headache, vasodilation and sweating, nausea, tinnitus, hearing impairment, vertigo or dizziness, blurred vision, and disturbance in color perception. [29] [30] More severe cinchonism includes vomiting, diarrhea, abdominal pain, deafness, blindness, and disturbances in heart rhythms. [30] Cinchonism is much less common when quinine is given by mouth, but oral quinine is not well tolerated (quinine is exceedingly bitter and many patients will vomit after ingesting quinine tablets): Other drugs, such as Fansidar (sulfadoxine with pyrimethamine) or Malarone (proguanil with atovaquone), are often used when oral therapy is required. Quinine ethyl carbonate is tasteless and odourless, [31] but is available commercially only in Japan. Blood glucose, electrolyte and cardiac monitoring are not necessary when quinine is given by mouth.

    Mechanism of action

    Quinine is theorized to be toxic to the malarial pathogen, Plasmodium falciparum , by interfering with the parasite's ability to dissolve and metabolize hemoglobin. [32] As with other quinoline antimalarial drugs, the mechanism of action of quinine has not been fully resolved.[ medical citation needed ] The most widely accepted hypothesis of its action is based on the well-studied and closely related quinoline drug, chloroquine. This model involves the inhibition of hemozoin biocrystallization in Heme Detoxification pathway, which facilitates the aggregation of cytotoxic heme. Free cytotoxic heme accumulates in the parasites, causing their deaths. [33] Quinine may target malaria's purine nucleoside phosphorylase enzyme. [34]


    Robert B. Woodward Robert Burns Woodward in 1965.jpg
    Robert B. Woodward

    The UV absorption of quinine peaks around 350 nm (in UVA). Fluorescent emission peaks at around 460 nm (bright blue/cyan hue). [35] Quinine is highly fluorescent (quantum yield ~0.58) in 0.1 M sulfuric acid solution. [27] [28]


    Cinchona trees remain the only economically practical source of quinine. However, under wartime pressure, research towards its synthetic production was undertaken. A formal chemical synthesis was accomplished in 1944 by American chemists R.B. Woodward and W.E. Doering. [36] Since then, several more efficient quinine total syntheses have been achieved, [37] but none of them can compete in economic terms with isolation of the alkaloid from natural sources. The first synthetic organic dye, mauveine, was discovered by William Henry Perkin in 1856 while he was attempting to synthesize quinine.


    Quinine biosynthesis Quinine Biosynthesis.png
    Quinine biosynthesis

    In the first step of quinine biosynthesis, the enzyme strictosidine synthase catalyzes a stereoselective Pictet–Spengler reaction between tryptamine and secologanin to yield strictosidine. [38] [39] Suitable modification of strictosidine leads to an aldehyde. Hydrolysis and decarboxylation would initially remove one carbon from the iridoid portion and produce corynantheal. Then the tryptamine side-chain were cleaved adjacent to the nitrogen, and this nitrogen was then bonded to the acetaldehyde function to yield cinchonaminal. Ring opening in the indole heterocyclic ring could generate new amine and keto functions. The new quinoline heterocycle would then be formed by combining this amine with the aldehyde produced in the tryptamine side-chain cleavage, giving cinchonidinone. For the last step, hydroxylation and methylation gives quinine. [40] [41]


    19th-century illustration of Cinchona calisaya Cinchona calisaya - Kohler-s Medizinal-Pflanzen-179.jpg
    19th-century illustration of Cinchona calisaya

    Quinine was used as a muscle relaxant by the Quechua, who are indigenous to Peru, Bolivia and Ecuador, to halt shivering due to low temperatures. [42] The Quechuas would mix the ground bark of cinchona trees with sweetened water to offset the bark's bitter taste, thus producing something similar to tonic water. [43]

    The Jesuit were the first to bring cinchona to Europe. The Spanish were aware of the medicinal properties of cinchona bark by the 1570s or earlier: Nicolás Monardes (1571) and Juan Fragoso (1572) both described a tree that was subsequently identified as the cinchona tree and whose bark was used to produce a drink to treat diarrhea. [44] Quinine has been used in unextracted form by Europeans since at least the early 17th century. [45] It was first used to treat malaria in Rome in 1631. A popular story of how it was brought to Europe by the Countess of Chinchon was debunked by medical historian Alec Haggis around 1941. [46] During the 17th century, malaria was endemic to the swamps and marshes surrounding the city of Rome. Malaria was responsible for the deaths of several popes, many cardinals and countless common Roman citizens. Most of the priests trained in Rome had seen malaria victims and were familiar with the shivering brought on by the febrile phase of the disease. The Jesuit brother Agostino Salumbrino (1564–1642), [47] an apothecary by training who lived in Lima, observed the Quechua using the bark of the cinchona tree for that purpose. While its effect in treating malaria (and malaria-induced shivering) was unrelated to its effect in controlling shivering from rigors, it was a successful medicine against malaria. At the first opportunity, Salumbrino sent a small quantity to Rome for testing as a malaria treatment. [48] In the years that followed, cinchona bark, known as Jesuit's bark or Peruvian bark, became one of the most valuable commodities shipped from Peru to Europe. When King Charles II was cured of malaria at the end of the 17th Century with quinine, it became popular in London. [49] It remained the antimalarial drug of choice until the 1940s, when other drugs took over. [50]

    The form of quinine most effective in treating malaria was found by Charles Marie de La Condamine in 1737. [51] [52] In 1820, French researchers Pierre Joseph Pelletier and Joseph Bienaimé Caventou first isolated quinine from the bark of a tree in the genus Cinchona – probably Cinchona officinalis – and subsequently named the substance. [53] The name was derived from the original Quechua (Inca) word for the cinchona tree bark, quina or quina-quina, which means "bark of bark" or "holy bark". Prior to 1820, the bark was first dried, ground to a fine powder, and then mixed into a liquid (commonly wine) which was then drunk. Large-scale use of quinine as a malaria prophylaxis started around 1850. In 1853 Paul Briquet published a brief history and discussion of the literature on "quinquina". [54]

    Quinine played a significant role in the colonization of Africa by Europeans. Quinine had been said to be the prime reason Africa ceased to be known as the "white man's grave". A historian has stated, "it was quinine's efficacy that gave colonists fresh opportunities to swarm into the Gold Coast, Nigeria and other parts of west Africa". [55]

    To maintain their monopoly on cinchona bark, Peru and surrounding countries began outlawing the export of cinchona seeds and saplings in the early 19th century. The Dutch government persisted in its attempts to smuggle the seeds, and in the late 19th century the Dutch grew the plants in Indonesian plantations. Soon they became the main suppliers of the plant, and in 1913 they set up the Kina Bureau, a cartel of cinchona producers charged with controlling price and production. [56] By the 1930s Dutch plantations in Java were producing 22 million pounds of cinchona bark, or 97% of the world's quinine production. [55] U.S. attempts to prosecute the Kina Bureau proved unsuccessful. [56] During World War II, Allied powers were cut off from their supply of quinine when Germany conquered the Netherlands, and Japan controlled the Philippines and Indonesia. The US had obtained four million cinchona seeds from the Philippines and began operating cinchona plantations in Costa Rica. Additionally, they began harvesting wild cinchona bark during the Cinchona Missions. Such supplies came too late. Tens of thousands of US troops in Africa and the South Pacific died due to the lack of quinine. [55] Despite controlling the supply, the Japanese did not make effective use of quinine, and thousands of Japanese troops in the southwest Pacific died as a result. [57] [58] [59] [60] Quinine remained the antimalarial drug of choice until after World War II, when other drugs, such as chloroquine, that have fewer side effects largely replaced it. [61]

    Bromo Quinine were brand name cold tablets containing quinine, manufactured by Grove Laboratories. They were first marketed in 1889 and available until at least the 1960s. [62]

    Society and culture

    Natural occurrence

    The bark of Remijia contains 0.5–2% of quinine. The bark is cheaper than bark of Cinchona . As it has an intense taste, it is used for making tonic water. [63]

    Regulation in the US

    From 1969, to 1992, the US Food and Drug Administration (FDA) received 157 reports of health problems related to quinine use, including 23 which had resulted in death. [64] In 1994, the FDA banned the marketing of over-the-counter quinine as a treatment for nocturnal leg cramps. Pfizer Pharmaceuticals had been selling the brand name Legatrin for this purpose. Also sold as a Softgel (by SmithKlineBeecham) as Q-vel[ citation needed ]. Doctors may still prescribe quinine, but the FDA has ordered firms to stop marketing unapproved drug products containing quinine. The FDA is also cautioning consumers about off-label use of quinine to treat leg cramps. [15] [16] Quinine is approved for treatment of malaria, but was also commonly prescribed to treat leg cramps and similar conditions. Because malaria is life-threatening, the risks associated with quinine use are considered acceptable when used to treat that affliction. [65]

    Though Legatrin was banned by the FDA for the treatment of leg cramps, the drug manufacturer URL Mutual has branded a quinine-containing drug named Qualaquin. It is marketed as a treatment for malaria and is sold in the United States only by prescription. In 2004, the CDC reported only 1,347 confirmed cases of malaria in the United States. [66]

    Cutting agent

    Quinine is sometimes detected as a cutting agent in street drugs such as cocaine and heroin. [67]

    Other animals

    Quinine is used as a treatment for Cryptocaryon irritans (commonly referred to as white spot, crypto or marine ich) infection of marine aquarium fish. [68]

    Related Research Articles

    <i>Cinchona</i> Genus of plants

    Cinchona is a genus of flowering plants in the family Rubiaceae containing at least 23 species of trees and shrubs. All are native to the tropical Andean forests of western South America. A few species are reportedly naturalized in Central America, Jamaica, French Polynesia, Sulawesi, Saint Helena in the South Atlantic, and São Tomé and Príncipe off the coast of tropical Africa, and others have been cultivated in India and Java, where they have formed hybrids.

    Tonic water carbonated soft drink

    Tonic water is a carbonated soft drink in which quinine is dissolved. Originally used as a prophylactic against malaria, tonic water usually now has a significantly lower quinine content and is consumed for its distinctive bitter flavor, though it is nowadays also often sweetened. It is often used in mixed drinks, particularly in gin and tonic.

    Mefloquine pharmaceutical drug

    Mefloquine, sold under the brand names Lariam among others, is a medication used to prevent or treat malaria. When used for prevention it is typically started before potential exposure and continued for several weeks after potential exposure. It can be used to treat mild or moderate malaria but is not recommended for severe malaria. It is taken by mouth.

    Antimalarial medications, also known as antimalarials, are designed to prevent or cure malaria. Such drugs may be used for some or all of the following:

    Cinchonism is a pathological condition caused by an overdose of quinine or their natural source, cinchona bark. Quinine and its derivatives are used medically to treat malaria and Lupus erythematosus. In much smaller amounts, quinine is an ingredient of tonic drinks, acting as a bittering agent. Cinchonism can occur from therapeutic doses of quinine, either from one or several large doses. Quinidine can also cause cinchonism symptoms to develop with as little as a single dose.

    Quinidine pharmaceutical agent that acts as a class I antiarrhythmic agent (Ia) in the heart

    Quinidine is a medication that acts as a class I antiarrhythmic agent (Ia) in the heart. 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.

    Quinquina variety of apéritif wines

    Quinquina, an aromatised wine, is a variety of apéritif wine. Traditionally quinquinas contain cinchona bark, which provides quinine. Quinine was used in treating malaria.

    Artesunate chemical compound

    Artesunate (AS) is a medication used to treat malaria. The intravenous form is preferred to quinidine for severe malaria. Often it is used as part of combination therapy, such as artesunate plus mefloquine. It is not used for the prevention of malaria. Artesunate can be given by injection into a vein, injection into a muscle, by mouth, and by rectum.

    Chloroquine Medication used to treat malaria

    Chloroquine is a medication used to prevent and to treat malaria in areas where malaria is known to be sensitive to its effects. Certain types of malaria, resistant strains, and complicated cases typically require different or additional medication. Occasionally it is used for amebiasis that is occurring outside the intestines, rheumatoid arthritis, and lupus erythematosus. It is taken by mouth. It is also being used experimentally to treat COVID-19 as of 2020.

    Primaquine pair of enantiomers

    Primaquine is a medication used to treat and prevent malaria and to treat Pneumocystis pneumonia. Specifically it is used for malaria due to Plasmodium vivax and Plasmodium ovale along with other medications and for prevention if other options cannot be used. It is an alternative treatment for Pneumocystis pneumonia together with clindamycin. It is taken by mouth.

    Quinic acid is a cyclitol, a cyclic polyol, and a cyclohexanecarboxylic acid. It is a colorless solid that can be extracted from plant sources. Quinic acid is implicated in the perceived acidity of coffee.

    Coat of arms of Peru coat of arms

    per se ; the National Coat of arms, or National Shield ; the Great Seal of the State ; and the Naval Coat of arms (Escudo de la Marina de Guerra

    <i>Cinchona officinalis</i> Species of plant

    Cinchona officinalis is a South American tree in the family Rubiaceae. It is native to wet montane forests in Colombia, Ecuador, Peru and Bolivia, between 1600–2700 meters above sea level.

    Malaria prophylaxis is the preventive treatment of malaria. Several malaria vaccines are under development.

    <i>Cinchona pubescens</i> Species of plant

    Cinchona pubescens, also known as red cinchona and quina (Quechua), is native to Central and South America. It is known as a medicinal plant for its bark's high quinine content- and has similar uses to Cinchona officinalis in the production of quinine, most famously used for treatment of malaria.

    History of malaria

    The history of malaria stretches from its prehistoric origin as a zoonotic disease in the primates of Africa through to the 21st century. A widespread and potentially lethal human infectious disease, at its peak malaria infested every continent, except Antarctica. Its prevention and treatment have been targeted in science and medicine for hundreds of years. Since the discovery of the parasites which cause it, research attention has focused on their biology, as well as that of the mosquitoes which transmit the parasites.

    John Sappington

    John S. Sappington (1776-1856) was an American physician known for creating a quinine pill to treat malaria in the Missouri area. He also wrote "The Theory and Treatment of Fevers," the first medical treatise published west of the Mississippi River.

    The Schedula Romana was a pharmaceutical handbill published in 1649. Generally assumed to have been designed after the knowledge of the cinchona bark properties brought from South America by Spanish Jesuit Juan de Lugo, the Schedula Romana is considered to be an early example of an efficient antimalarial recipe. The Schedula gives instructions on proper dosages and application of the cinchona bark. The doses recommended are likely to have been established by trial and error, and they are assumed to be relied on results obtained using the various recipes proposed by Roman apothecaries.

    <i>Therapeutice Specialis ad Febres Periodicas Perniciosas</i>

    The Therapeutice Specialis ad Febres Periodicas Perniciosas is a book published in 1712 and written by Italian physician Francesco Torti (1658–1741), professor of medicine at Modena. The book illustrates an elaborate taxonomy of fevers in order to explain which ones could be cured by the use of the cinchona bark. The Therapeutice Specialis is considered the first systematic study of the action of cinchona in different types of fever.

    Água de Inglaterra

    Água de Inglaterra was an example of the 'secret remedies' that were in vogue in Portugal during the 18th Century. The name was used for various pharmaceutical preparations produced by several manufacturers from the end of the 17th Century to the beginning of the 19th. In addition to the name, these preparations had in common the fact that the major therapeutic ingredient was the bark of the cinchona tree, from which quinine is obtained. Reference to the drug can be found in all Portuguese Pharmacopeia between 1681 and 1821.


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    31. Jamaludin A, Mohamad M, Navaratnam V, Selliah K, Tan SC, Wernsdorfer WH, Yuen KH (February 1988). "Relative bioavailability of the hydrochloride, sulphate and ethyl carbonate salts of quinine". British Journal of Clinical Pharmacology. 25 (2): 261–3. doi:10.1111/j.1365-2125.1988.tb03299.x. PMC   1386482 . PMID   3358888.
    32. DrugBank, ed. (24 February 2017). "Quinine". DrugBank. Archived from the original on 6 February 2017.
    33. Foley M, Tilley L (February 1997). "Quinoline antimalarials: mechanisms of action and resistance". International Journal for Parasitology. 27 (2): 231–40. doi:10.1016/s0020-7519(96)00152-x. PMID   9088993.
    34. Lowe D (22 January 2019). "Quinine's Target". Science . Retrieved 28 January 2019.
    35. "Basic Concepts in Fluorescence". Archived from the original on 13 September 2012.
    36. Woodward R, Doering W (1944). "The Total Synthesis of Quinine". J Am Chem Soc . 66 (849): 849. doi:10.1021/ja01233a516.
    37. Kaufman TS, Rúveda EA (2005). "Die Jagd auf Chinin: Etappenerfolge und Gesamtsiege". Angewandte Chemie International Edition (in German). 117 (6): 876–907. doi:10.1002/ange.200400663.
    38. Treimer JF, Zenk MH (November 1979). "Purification and properties of strictosidine synthase, the key enzyme in indole alkaloid formation". European Journal of Biochemistry. 101 (1): 225–33. doi:10.1111/j.1432-1033.1979.tb04235.x. PMID   510306.
    39. Mizukami H, Nordlöv H, Lee SL, Scott AI (August 1979). "Purification and properties of strictosidine synthetase (an enzyme condensing tryptamine and secologanin) from Catharanthus roseus cultured cells". Biochemistry. 18 (17): 3760–3. doi:10.1021/bi00584a018. PMID   476085.
    40. Medicinal natural products : a biosynthetic approach (3rdition ed.). Wiley. pp. 380–381. ISBN   9780470742761.
    41. O'Connor SE, Maresh JJ (August 2006). "Chemistry and biology of monoterpene indole alkaloid biosynthesis". Natural Product Reports. 23 (4): 532–47. doi:10.1039/b512615k. PMID   16874388.
    42. History of quinine: Friedrich A. Flückiger and Daniel Hanbury, Pharmacographia: A history of the principal drugs of vegetable origin, met with in Great Britain and British India (London, England: Macmillan and Co., 1874), pages 302-331: Cortex Cinchonæ Archived 11 November 2014 at the Wayback Machine .
    43. Hobbs K, West D (2020). The Story of Trees : and how they changed the way we live. illustrated by Thibaud Hérem. London: Laurence King. p. 148. ISBN   978-1-7862-7522-6.
    44. See:
      • Fernando I. Ortiz Crespo (1995) "Fragoso, Monardes and pre-Chinchonian knowledge of Cinchona," Archives of Natural History, 22 (2) : 169–181.
      • David C. Stuart, Dangerous Garden: The Quest for Plants to Change Our Lives (London, England: Frances Lincoln Ltd., 2004), p. 28. Archived 4 June 2016 at the Wayback Machine
      • Nicolás Monardes, Primera, segunda y tercera partes de la Historia Medicinal de las cosas que le traen de nuestras Indias Occidentales y que sirven en Medicina [First, second and third parts of the medical history of things that have been brought from the new West Indies and that are of use in medicine] (Seville, Spain: Fernando Diaz, 1580), pp. 74-75. Archived 8 May 2016 at the Wayback Machine From p. 74: "Del nuevo Reyno, traen una corteza, que dizen ser de un arbol, que es de mucha grandeza: el qual dize, que lleva unas hojas de forma de coraçon, y que no lleva fruto. Este arbol tiene una corteza gruessa, muy solida y dura, que en esto y en el color parece mucho a la corteza del palo que llaman Guayacan: en la superfiecie tiene una pelicula delgada blanquisca, quebrada por toda ella: tiene la corteza mas de un dedo de gruesso, solida, y pesada: la qual gustada tiene notable amargor, como el dela Genciana: tiene en el gusto notable astriction, con alguna aromaticidad, porque al fin del mascar la respira della buen olor. Tienen los Indios esta corteza en mucho, y usan de lla en todo genero de camaras, que sean con sangre, o sin ella. Los Españoles fatigados de aquesta enfermedad, por aviso de los Indios, han usado de aquesta corteza y han sanado muchos del los con ella. Toman della tanto como una hava pequeña hecha poluos, toma se en vino tinto, o en agua apropiada, como tienen la calentura, o mal: ha se de tomar por la mañana en ayunas, tres o quatro vezes: usando en lo demas, la orden y regimiento que conviene a los que tienen camaras." (From the new kingdom, there is brought a bark, which is said to be from a tree, which is very large: it is said that it bears leaves in the form of a heart, and that it bears no fruit. This tree has a thick bark, very solid and hard, that in this and in its color looks much like the bark of the tree that is called guayacán [i.e., lignum vitae]: on the surface, it has a thin, discontinuous whitish film throughout it: it has bark more than one finger thick, solid and heavy: which, when tasted, has a considerable bitterness, like that of the gentian: it has in its taste a considerable astringency, with some aromaticity, because at the end of chewing it, one breathes with a sweet odor. The Indians hold this bark in high regard, and use it for all sorts of diarrhea, that are with blood [i.e., bloody] and without it. The Spanish [who are] tired of this disease, on the advice of the Indians, have used this bark and have healed many of those with it. They take as much as a small bean, make [it into] powder, take it in red wine or in appropriate water, if they have fever or illness: it must be taken in the morning on an empty stomach, three or four times: otherwise, using the order and regimen that suits those who have diarrhea.)
      • Fragoso, Juan, Discursos de las cosas Aromáticas, árboles y frutales, y de otras muchas medicinas simples que se traen de la India y Oriental y sirven al uso de la medicina [Discourse on fragrant things, trees and fruits, as well as many other ordinary medicines that have been brought from India and the Orient and are of use to medicine] (Madrid, Spain: Francisco Sanchez, 1572), p. 35. Archived 5 May 2016 at the Wayback Machine From p. 35: "En el nuevo mundo ay un grande arbol que lleva las hojas a forma de coraçon, y carece de fruto. Tiene dos cortezas, la una gruessa muy solida dura, que assi en la sustancia como en el color es muy semejante al Guayacan: la otra es mas delgada y blaquezina, la qual es amarga con alguna estipticidad: y de mas desto es aromatica. Tienen la en mucho nuestros Indios, porque la usan contra qualesquier camaras, tomando de poluo peso de uno drama o poco mas, desatado en agua azerada, o vino tinto." (In the new world, there is a big tree that bears leaves in the form of a heart, and lacks fruit. It has two barks, one [is] thick, very solid, [and] hard, which in substance as well as in color is much like guayacan [i.e., lignum vitae]: the other is thinner and whitish, which is bitter with some styptic [i.e., astringent] quality: and besides this, it is aromatic. Our Indians regard it highly, because they use it against any diarrheas, taking a weight of a dram or a bit more of the powder, mixing it in mineral water, or red wine.)
    45. Achan J, Talisuna AO, Erhart A, Yeka A, Tibenderana JK, Baliraine FN, Rosenthal PJ, D'Alessandro U (May 2011). "Quinine, an old anti-malarial drug in a modern world: role in the treatment of malaria". Malaria Journal. 10: 144. doi:10.1186/1475-2875-10-144. PMC   3121651 . PMID   21609473.
    46. Stephanie Pain (15 September 2001). "The Countess and the cure". New Scientist.
    47. Juan Eusebio Nieremberg and Alonso de Andrade, Varones Ilustres en Santidad, Letras, y Zelo de las Almas. De la Compañia de Jesus. [Illustrious men in holiness, letters, and zeal for souls. Of the Society of Jesus (i.e., Jesuits).] (Madrid, Spain: Joseph Fernandez de Buendia, 1666), vol. 5, Vida del devoto Hermano Agustin Salumbrino (The life of the devout Brother Agustin Salumbrino), pp. 612–628 ; see p. 612. Archived 22 May 2016 at the Wayback Machine From p. 612: "Nacio el Hermano Agustin Salumbrino el año de mil y quinientos y sesenta y quatro en la Ciudad de Flori en le Romania, … " (Brother Agustino Salumbrino was born in the year 1564 in the city of Flori [Note: This is an error; he was born in Forli.] in Emilia-Romagna, … )
    48. See:
      • Francisco Medina Rodríguez (July 2007) "Precisiones sobre la historia de la quina" Archived 4 March 2016 at the Wayback Machine (Details about the history of quinine), Reumatología Clínica, 3 (4) : 194–196. (in Spanish) From p. 195: "De hecho, aunque no esté dicha la ultima palabra, hay escritos jesuitas que mencionan que la quina llegó a Roma en 1632, con el provincial de las missiones jusuitas del Perú, el padre Alonso Messia Venegas, como su introductor, cuando trajo una muestra de la corteza para presentaria como primicia, quien había partido de Lima 2 años antes, ya que consta que estuvo en Sevilla en 1632, donde publicó uno de sus libros y siguió su camino hacia Roma en calidad de procurador." (In fact, however, it is not the last word: there are Jesuit writings that mention that quinine arrived in Rome in 1632, with the provincial of the Jesuit missions of Peru, Father Alonso Messia Venegas, as its introducer, when he brought a sample of the bark so that it could be presented as a novelty, which had left Lima two years before, since in fact it had been in Seville in 1632, where he published one of his books and [then] he went his way toward Rome in the capacity of procurator.)
      • Enrique Torres Saldamando, Los Antiguos Jesuitas del Perú [The old Jesuits of Peru] (Lima, Peru: Imprenta Liberal, 1882), pp. 180-191 ; see especially p. 181. Archived 10 April 2016 at the Wayback Machine (in Spanish) From p. 181: "Al siguiente año se dirigieron á Europa los Procuradores P. Alonso Messía Venegas y P. Hernando de Leon Garavito, llevando gran cantidad de la corteza de la quina, cuyo conocimiento extendieron por el mundo los jesuitas." (In the following year [i.e., 1631] there went to Europe the procurators Father Alonso Messia Venegas and Father Hernando de Leon Garavito, taking a great quantity of cinchona bark, knowledge of which the Jesuits spread throughout the world.)
      • Alberto Bailetti, Blog: "La Misión del Jesuita AgustÍn Salumbrino, la malaria y el árbol de quina" Archived 4 March 2016 at the Wayback Machine (The mission of the Jesuit Agustin Salumbrino, malaria and the quinine tree), Chapter 10: La Condensa de Chinchón (The countess of Chinchon). (in Spanish) From Chapter 10: "A últimas horas de la tarde del treinta y uno de mayo de 1631 se hizo a la vela la armada real con dirección a Panamá llevando el millonario cargamento de oro y plata.
      En una de las naves viajaban los procuradores jesuitas padres Alonso Messia y Hernando León Garavito custodiando los fardos con la corteza de quina en polvo, preparados por Salumbrino. Después de casi veinte días de navegación el inapreciable medicamento llegó a la ciudad de Panamá, donde fue descargado para cruzar en mulas el agreste camino del itsmo palúdico hasta Portobelo para seguir a Cartagena y la Habana, cruzar el Atlántico y llegar a Sanlúcar de Barrameda en Sevilla. … Finalmente siguió su camino a Roma y a su destino final el Hospital del Espíritu Santo."
      (Late in the afternoon of the 31st of May, 1631, the royal armada set sail in the direction of Panama, carrying its multimillion [dollar] cargo of gold and silver.
      On one of the ships traveled the Jesuit procurators Fathers Alonso Messia and Hernando León Garavito, guarding the cases of powdered cinchona bark, prepared by Salumbrino. After almost 20 days of sailing, medicine arrived in the city of Panama, where it was transloaded onto mules. It then traveled the malarial isthmus as far as Portobelo, thence to Cartagena [in Colombia] and Havana. It then traveled to Sanlúcar de Barrameda in Seville, [Spain]. … Finally it followed the road to Rome and to its final destination, the Hospital of the Holy Spirit.)
    49. Rocco F (2004). Quinine: malaria and the quest for a cure that changed the world. New York, NY: Perennial.
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    52. See also: Joseph de Jussieu, Description de l'arbre à quinquina: mémoire inédit de Joseph de Jussieu (1737) Archived 19 July 2012 at the Wayback Machine (Description of the quinquina tree: unpublished memoir of Joseph de Jussieu (1737)). De Jussieu accompanied de la Condamine on the latter's expedition to Peru.
    53. Pelletier PJ, Caventou JB (1820). "Recherches Chimiques sur les Quinquinas" [Continuation: Chemical Research on Quinquinas]. Annales de Chimie et de Physique (in French). Crochard. 15: 337–365. The authors name quinine on page 348: " …, nous avons cru devoir la nommer quinine, pour la distinguer de la cinchonine par un nom qui indique également son origine." ( …, we thought that we should name it "quinine" in order to distinguish it from cinchonine by means of a name that also indicates its origin.)
    54. Paul Briquet (1853) Traité thérapeutique du quinquina et de ses preparations from Internet Archive
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