Head-to-head comparisons of medication uses, side effects, warnings, and more.
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.
Calcium polycarbophil (FiberCon)
Docusate/senna
Calcium polycarbophil (FiberCon)
Docusate/senna
Summary of Fibercon vs. Senexon-s
Summary for Bulk-forming laxative
Calcium polycarbophil (FiberCon) is an over-the-counter medication that's used to treat occasional constipation in people 12 years and older. This bulk-forming laxative is found as a generic as well as under some familiar brand names like FiberCon and Fiber-Lax. It's available as tablets and is taken by mouth up to 4 times a day. Calcium polycarbophil (FiberCon) doesn't cause many side effects, and it's less likely to cause gas and bloating than similar medications.
Summary for Stool softener / Stimulant laxative
Docusate/senna is a combination medication containing docusate and senna. The two laxatives work together to treat constipation.