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|Section2= |Section3= |Section5= |Section6= |Section4= |Section7= |Section8= }} Magnesium citrate is a magnesium preparation in salt form with citric acid in a 1:1 ratio (1 magnesium atom per citrate molecule). The name "magnesium citrate" is ambiguous and sometimes may refer to other salts such as trimagnesium citrate which has a magnesium:citrate ratio of 3:2. Magnesium citrate is used medicinally as a saline laxative and to completely empty the bowel prior to a major surgery or colonoscopy. It is available without a prescription, both as a generic and under various brand names including Citromag and Citroma. It is also used in the pill form as a magnesium dietary supplement. It contains 11.3% magnesium by weight. Compared to trimagnesium citrate, it is much more water-soluble, less alkaline, and contains 29.9% less magnesium by weight. As a food additive, magnesium citrate is used to regulate acidity and is known as E number E345. == Mechanism of action == Magnesium citrate works by attracting water through the tissues by a process known as osmosis. Once in the intestine, it can attract enough water into the intestine to induce defecation. The additional water stimulates bowel motility. This means it can also be used to treat rectal and colon problems. Magnesium citrate functions best on an empty stomach, and should always be followed with a full (eight ounce or 25 cl) glass of water or juice to help the magnesium citrate absorb properly and help prevent any complications. Magnesium citrate solutions generally produce bowel movement in one half to six hours. Through the same osmotic process, magnesium citrate functions as an anti-cramping agent. It is useful for prevention of cramps and for muscular relaxation when taken before and after exercise. It is especially useful in relief of muscle cramps, often within seconds of ingestion when taken as powdered form dissolved in warm water. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Magnesium citrate」の詳細全文を読む スポンサード リンク
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