Colace Regular Strength Stool Softener capsules gently soften hard stool for easier bowel movements. As the #1 doctor-recommended stool softener brand, Colace has been trusted for nearly 60 years to relieve occasional constipation. It alleviates symptoms like straining, hard dry stools, and irregular bowel movements. Unlike stimulant laxatives, Colace uses docusate sodium to allow water and fats into the stool, making it softer and easier to pass.