Senna

Last Updated: July 3, 2024

Senna alexandrina is a plant containing sennosides which possess laxative properties. Senna is commonly used to treat constipation and prepare the bowels for a colonoscopy.

Senna is most often used for

What are other names for Senna?
Note that Senna is also known as:
  • Senna Alexandrina
  • Daio
Dosage information

In accordance with clinical usage, the correct dose is the "lowest dose required to produce the desired effects (soft-formed and comfortable stool)". This is either 1-2g of the powdered extract or fruit usually standardized to 10-30mg active sennosides.

Higher doses are used only if the aforementioned lower dose is not effective (it should be noted that senna alexandria is a delayed laxative unlike the immediate effects of caffeine and it may take a few hours to assess whether a dose is effective or not).

Senna alexandria tends to be taken prior to bed in order to time its laxative effect with a morning bowel movement.

Supplements Demystified: Get Our Unbiased, Evidence-Based Guide

Examine Database: Senna
What works and what doesn't?

Unlock the full potential of Examine

Get started

Don't miss out on the latest research

Research Breakdown

🚧 Under Renovation 🚧

The information in this section is slated for renovation — it will soon be transformed into a more usable (and readable!) form in the coming months. As such, the text in this section may be out of date and not up to Examine’s current standards for writing style.