Topic: LaxativesDescription
Laxatives may be grouped by mechanism of action.
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Laxatives Description
Saline cathartics include dibasic sodium phosphate (Phospo-Soda), magnesium citrate, magnesium hydroxide
(milk of magnesia), magnesium sulfate (Epsom salts), sodium biphosphate, and others.
Stimulant and irritant laxatives increase the peristaltic movement of the intestine. Examples include
cascara and bisadocyl (Dulcolax.)
Bulk producing laxatives increase the volume of the stool, and will both soften the stool and stimulate intestinal
motility. Psyillium (Metamucil, Konsil) and methylcellulose (Citrucel) are examples of this type.
Mineral oil is an emollient laxative. It acts by retarding intestinal absorption of
fecal water, thereby
softening the stool.
The hyperosmotic laxatives are glycerin and lactulose (Chronulac, Duphalac).
Senokot is a chemical combination laxative, containing a stimulant laxative and stool softener. Reaction time: 6-12 hours.
Not recommended for long term usage.
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