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Senna
© Steven FosterParts Used & Where Grown
The senna shrub grows in India, Pakistan, and China. The leaves and pods are used medicinally.
- Reliable and relatively consistent scientific data showing a substantial health benefit.
- Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit.
- For an herb, supported by traditional use but minimal or no scientific evidence. For a supplement, little scientific support.
Our proprietary “Star-Rating” system was developed to help you easily understand the amount of scientific support behind each supplement in relation to a specific health condition. While there is no way to predict whether a vitamin, mineral, or herb will successfully treat or prevent associated health conditions, our unique ratings tell you how well these supplements are understood by the medical community, and whether studies have found them to be effective for other people.
For over a decade, our team has combed through thousands of research articles published in reputable journals. To help you make educated decisions, and to better understand controversial or confusing supplements, our medical experts have digested the science into these three easy-to-follow ratings. We hope this provides you with a helpful resource to make informed decisions towards your health and well-being.
This supplement has been used in connection with the following health conditions:
| Used for | Amount | Why |
|---|---|---|
Constipation | 20 to 60 mg of sennosides per day for no more than ten days |  [3 stars] Senna is considered a stimulant laxative because it stimulates bowel muscle contractions. Senna is the most popular of these stimulant herbs. |
Bowel Surgery | Requires a doctor's supervision |  [2 stars] A double-blind trial found that senna may be an effective treatment for preparing the bowel for colon and rectal surgery, though people undergoing surgery should ask their doctor before using supplements. |
Traditional Use (May Not Be Supported by Scientific Studies)
People in northern Africa and southwestern Asia have used senna as a laxative for centuries. It was considered a “cleansing” herb because of its cathartic effect. In addition, the leaves were sometimes made into a paste and applied to various skin diseases. Ringworm and acne were both treated in this way.
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The information presented by TraceGains is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires December 2025.
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