Stool Softener Laxative provides safe, effective and fast relief for your occasional constipation. Stool Softener goes to work gently, usually producing bowel movements within 12-72 hours. This laxative formula uses 100 mg of Docusate Sodium stool softening laxative as the active ingredient. Compare this formula with name-brand laxatives and save big. Same relief at much lower prices.