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Encyclopedia > Magnesium citrate
Magnesium citrate
IUPAC name Magnesium citrate
Molecular formula C6H6O7Mg
CAS number [7779-25-1]
SMILES [Mg+2].O=C([O-])CC(O)(CC(=O)[O-])C(O)=O
Molar mass 214.41 g/mol
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)

Infobox disclaimer and references

Magnesium citrate is a chemical agent used medicinally as a laxative and to empty the bowel prior to a surgery or colonoscopy. It is available over the counter, both as a generic brand or under the brand name Citroma. IUPAC nomenclature is a system of naming chemical compounds and of describing the science of chemistry in general. ... This article or section does not cite any references or sources. ... CAS registry numbers are unique numerical identifiers for chemical compounds, polymers, biological sequences, mixtures and alloys. ... The simplified molecular input line entry specification or SMILES is a specification for unambiguously describing the structure of chemical molecules using short ASCII strings. ... Molar mass is the mass of one mole of a chemical element or chemical compound. ... In chemistry, the standard state of a material is its state at 1 bar (100 kilopascals) and 25 degrees Celsius (298. ... Colonoscopy is the minimally invasive endoscopic examination of the large colon and the distal part of the small bowel with a fiber optic camera on a flexible tube passed through the anus. ...

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 also helps to create more feces, which naturally 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) glass of water or juice to help the magnesium citrate absorb properly and help prevent any complications. Magnesium citrate is generally a very unharmful substance, but care should be taken to consult with a health professional if any adverse health problems are suspected or felt. Osmosis is the net movement of water across a partially permeable membrane from a region of high solvent potential to an area of low solvent potential, up a solute concentration gradient. ...


A typical dose for adults and children twelve years or older is seven to ten fluid ounces (the latter being 300 ml), followed immediately with a full eight fluid-ounce glass of water. For children between three and twelve years of age, the typical dose is roughly half that, based on physician recommendation. Magnesium citrate is not recommended for use in children and infants two years of age or less.[1] It is always important to correctly follow the doses prescribed by your doctor or physician.

Taste and Appearance

Magneisum Citrate can be clear or colored, due to the flavoring agents. Magnesium Citrate generally comes in lemon or lemon-lime flavor, but can come in cherry, orange and grape as well. It has an extremely sour taste, but chilling it in the refrigerator or pouring it over a glass of ice can help with the unpleasant taste. Only the lemon or lemon-lime flavors should be used in preparation for a colonoscopy, as the other colors are produced with dyes that would produce false indications in the scan.


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