Key takeaways
Calcium polycarbophil (FiberCon) and docusate/senna (Senna-S) are both over-the-counter medications used to treat occasional constipation, but they work in different ways. Calcium polycarbophil is a bulk-forming laxative that keeps water in the stool, making it heavier and easier to pass. It is a synthetic fiber supplement that is less likely to cause gas and bloating compared to natural fiber supplements like Metamucil. On the other hand, docusate/senna is a combination of a stool softener (docusate) and a stimulant laxative (senna). Docusate draws water into the intestines to soften the stool, while senna stimulates the intestines to push the stool out, often working within 6-12 hours. While both medications should not be used for more than 7 days without consulting a healthcare professional, docusate/senna tends to work faster and is recommended to be taken at night for a morning bowel movement. However, it can cause stomach cramps and loose stools. Calcium polycarbophil, although gentler, can take up to 3 days to produce a bowel movement and requires a full glass of water with each dose to prevent choking.
