How long does Dulcolax take to work?

Dulcolax laxative medicated suppositories produce a bowel movement in about 15 to 60 minutes and the laxative tablets relieve constipation overnight, according to Dulcolax. Dulcolax stool softener assists the body to soften the stool so that a patient's bowels move in about 12 to 72 hours.

Ducolax stool softener is a laxative that works without stimulants; it works with the body to add more water to soften the stool. The tablets and the suppositories, designed only for rectal use, both contain bisacodyl, the active ingredient that helps move a patient's bowels, notes Ducolax. As of 2015, the company has been in business for over 60 years.