Dulcolax Stimulant Laxative Liquid Gels reactivates your natural gut rhythm* and provides predictable constipation relief in as little as six to 12 hours. One dose helps relieve bloating, straining, and painful stools**. Liquid gels are made with bisacodyl, which softens stools and gently stimulates bowel movement. *When taken at night. **Additional symptom relief is a result of constipation relief.