Magnesia Enema

For most nonhospitalized persons with acute constipation, the infrequent use (less than every few weeks) of most laxative products is acceptable however, before more potent laxative or cathartics are used, relatively simple measures may be tried. For example, acute constipation may be relieved by the use of a tap-water enema or a glycerin suppository if neither is effective, the use of oral sorbitol, low doses of bisacodyl or senna, or saline laxatives (e.g., milk of magnesia) may provide relief. 

In the hospitalized patient without GI disease, constipation may be related to the use of general anesthesia and/or opiate substances. Most orally or rectally administered laxatives may be used. For prompt initiation of a bowel movement, a tap-water enema or glycerin suppository is recommended, or milk of magnesia. 

Constipation is a common symptom in the neurodegenerative disorders. Inadequate fluid intake, dysphagia, dysautonomia, and immobility aU contribute to constipation. Increasing fluid and fiber intake, along with increasing physical activity can help. Use of docusate sodium, milk of magnesia, dulcolax and senna may also improve symptoms. For severe constipation, lactulose, magnesium citrate and enemas can provide relief. 

For acute constipation in most age groups, a tap-water enema or glycerin suppository may be helpful. Occasional use of milk of magnesia or an anthraquinone laxative in low doses is justified as well. 

These agents should be used primarily for acute evacuation of the bowel, which may be necessary before diagnostic examinations, after poisonings, and in conjunction with some anthelmintics to eliminate parasites. Such agents as milk of magnesia (an 8% suspension of magnesium hydroxide) may be used occasionally (every few weeks) to treat constipation in otherwise healthy adults. Sahne cathartics should not be used on a routine basis. The enema formulations of these agents may be useful in fecal impactions. 

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