The dosage for Dulcolax 5 milligram tablets for adults is one to three tablets by mouth once daily, according to MedicineNet. Children ages 6 to under 12 years take one tablet by mouth once daily. For children under age 6, consult a doctor.
Dulcolax, generically known as bisacodyl, is a stimulant laxative that causes bowel movements due to stimulation of the muscles in the wall of the small intestine and colon, explains MedicineNet. Doctors generally prescribe it to alleviate constipation and irregular bowel movements. In addition to oral tablets, this laxative is available as a rectal suppository and enema solution.