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lactulose (chronulac, duphalac, enulose)

available over the counter: no

uses: long term treatment of constipation

mechanism of action: draws water into the bowel;  loosens and softens stool; stimulates bowel activity

side effects
• common:
diarrhea, intestinal cramps, increased thirst
• less common: none
• serious: weakness, confusion, muscle cramps

concerns: do not take for more than one week, unless your doctor advises; overuse may cause dependence


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