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COLOCYNTH, COLOQUINTIDA

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Originally appearing in Volume V06, Page 697 of the 1911 Encyclopedia Britannica.
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COLOCYNTH, COLOQUINTIDA Or See also:BITTER See also:APPLE, Citrullus Colocynthis, a plant of the natural See also:order See also:Cucurbitaceae. The See also:flowers are unisexual; the male blossoms have five stamens with sinuous anthers, the See also:female have reniform stigmas, and an ovary with three large fleshy placentas. The See also:fruit is See also:round, and about the See also:size of an See also:orange; it has a thick yellowish rind, and a See also:light, spongy and very bitter pulp, which yields the colocynth of druggists. The seeds, which number from 260 to 300, and are disposed in See also:vertical rows on the three parietal placentas of the fruit, are See also:flat and ovoid and dark-See also:brown; they are used as See also:food by some of the tribes of the See also:Sahara, and a coarse oil is expressed from them. The pulp contains only about 3.5 % of fixed oil, whilst the seeds contains about 15%. The foliage resembles that of the See also:cucumber, and the See also:root is perennial. The plant has a wide range, being found in See also:Ceylon, See also:India, See also:Persia, See also:Arabia, See also:Syria, See also:North See also:Africa, the Grecian See also:Archipelago, the Cape Verd Islands, and the See also:south-See also:east of See also:Spain. The See also:term pakkuoth, translated "See also:wild gourds" in 2 See also:Kings iv. 39, is thought to refer to the fruit of the colocynth; but, according to Dr See also:Olaf See also:Celsius (1670-1756), a See also:Swedish theologian and naturalist, it signifies a plant known as the squirting cucumber, Ecbalium See also:Elaterium. The commercial colocynth consists of the peeled and dried fruits. In the preparation of the See also:drug, the seeds are always removed from the pulp. Its active principle is an intensely bitter amorphous or crystalline See also:glucoside, colocynthin, CaH54O23, soluble in See also:water, See also:ether and See also:alcohol, and decomposable by acids into See also:glucose and a See also:resin, colocynthein, C40H54013.

Colocynthein also occurs as such in the drug, together with at least two other resins, citrullin and colocynthiden. Colocynthin has been used as a hypodermic purgative—a class of drugs practically non-existent, and highly to be desired in numberless cases of See also:

apoplexy. The dose recommended for hypodermic injection is fifteen minims of a 1 % See also:solution in See also:glycerin. The See also:British Pharmacopeia contains a See also:compound See also:extract of colocynth, which no one ever uses; a compound pill—dose 4 to 8 grains—in which oil of See also:cloves is included in order to relieve the griping caused by the drug; and the Pilula Colocynthidis et Hyoscyami, which contains 2 parts of the compound pill to i of extract of hyoscyamus. This is by far the best preparation, the hyoscyamus being added to prevent the See also:pain and griping which is attendant on the use of colocynth alone. The See also:official dose of this pill is 4 to 8 grains, but the most effective and least disagreeable manner in which to obtain its See also:action is to give four two-See also:grain pills at intervals of an See also:hour or so. In See also:minute doses colocynth acts simply as a bitter, but is never given for this purpose. In See also:ordinary doses it greatly increases the secretion of the small See also:intestine and stimulates its See also:muscular coat. The See also:gall-See also:bladder is also stimulated, and the biliary See also:function of the See also:liver, so that colocynth is both an excretory and a secretory cholagogue. The action which follows hypodermic injection is due to the See also:excretion of the drug from the See also:blood into the alimentary See also:canal. Though colocynth is a drastic hydragogue cathartic, it is desirable, as a See also:rule, to supplement its action by some drug, such as aloes, which acts on the large intestine, and a sedative must always be added. Owing to its irritant properties, the drug must not be used habitually, but it is very valuable in initiating the treatment of See also:simple chronic See also:constipation, and its pharmacological properties obviously render it especially useful in cases of hepatitis and congestion of the liver.

Colocynth was known to the See also:

ancient See also:Greek, See also:Roman and Arabic physicians; and in an Anglo-Saxon herbal of the 11th See also:century. (Cockayne, Leechdoms, &c., vol. i. p.

End of Article: COLOCYNTH, COLOQUINTIDA

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