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Laxative


Laxative (purgatives, aperients) are substances that loosen stools and increase bowel movements. They are used to treat and prevent constipation.

Laxatives vary based on how they work and the side effects they have. Certain stimulant, lubricant and saline laxatives are used to evacuate the colon for rectal and bowel examinations, and may be supplemented by enemas under certain circumstances. Sufficiently high doses of laxatives may cause diarrhea.

Some laxatives combine more than one active ingredient. Laxatives may be oral or suppository in form.

Bulk-forming laxatives, also known as roughage, are substances, such as fiber in food and hydrophilic agents in over-the-counter drugs, that add bulk and water to stools so that they can pass more easily through the intestines (lower part of the digestive tract).

Properties

Bulk-forming agents absorb water and should be taken with plenty of water. Bulk-forming agents generally have the gentlest of effects among laxatives and can be taken for long-term maintenance of regular bowel movements.

Foods that help with laxation include fiber-rich foods. Dietary fiber includes insoluble fiber and soluble fiber, such as:

Emollient laxatives, also known as stool softeners, are anionic surfactants that enable additional water and fats to be incorporated in the stool, making it easier for them to move through the gastrointestinal tract.

Properties

Emollient agents should be taken with plenty of water. Emollient agents prevent constipation rather than treating long-term constipation.


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