Colace® Regular Strength Stool Softener capsules gently soften hard and painful stool for a No. 2 that’s easy to do. It relieves many symptoms of occasional constipation, including straining during bowel movements, hard, dry stools and infrequent or irregular bowel movements. Its active ingredient, docusate sodium, allows water and fats to get into the stool, helping to soften and make it more comfortable to pass. Cramp-free relief from occasional constipation in 12 to 72 hours. Stimulant-free.