Get Gentle, Overnight Relief of Occasional Constipation with Senokot S Laxative & Stool Softener Senokot S is a dual action constipation treatment: a natural senna laxative plus stool softener for gentle overnight relief of occasional constipation and hard dry stools. The stool softener is docusate sodium which helps to draw water into the intestine, making it easier for hard dry stool to pass through. The natural senna used is extracted from the deseeded and dried pods of the Senna Alexandrina flower. Occasional Constipation: Constipation symptoms can be irregular, painful or infrequent bowel movements, & hard stools. Get overnight relief with natural senna, without using enemas or suppositories. Pharmacist Recommended Laxative Brand: Trusted for over 60 years, Senokot laxatives use natural senna to encourage gentle, overnight relief of occasional constipation.