--- title: "Senna: Benefits, Uses & Side Effects | Herbadex" description: "A stimulant laxative for short-term relief of occasional constipation." language: en url: https://herbadex.com/en/herb/senna/ source: Herbadex (https://herbadex.com) --- [Dried Herb & Tea](https://herbadex.com/en/form/dried-herb-tea/) # Senna Senna alexandrina A Strong clinical evidence A stimulant laxative for short-term relief of occasional constipation. No longer than 1 week; not for children under 12, in pregnancy or while breastfeeding. [Digestion](https://herbadex.com/en/for/digestion/) Image: Herbadex Botanik Stüdyosu · Özel Üretim Pregnancy **⚠ Avoid** Breastfeeding **⚠ Avoid** Children **⚠ Avoid** Drug interactions **Interaction reported** ## At a glance The EMA classes senna leaf as "well-established use" for short-term relief of occasional constipation. It is a stimulant laxative: long-term use can lead to a sluggish bowel, laxative dependence and loss of water and electrolytes. It should only be used if a change of diet or bulk-forming fibre products are not enough. **Parts used:** leaves **Key constituents:** Sennoside A&B Updated: October 15, 2026 ✓ This herb record is backed by official European Medicines Agency (EMA HMPC) herbal monographs. ## What is it used for? - A Strong clinical evidence Effective for short-term relief of occasional constipation. \[1\] ## How is it used? ### Food As a ready-made product providing 10–30 mg hydroxyanthracene derivatives per dose, taken at bedtime. Use the lowest dose that gives a comfortable soft stool. **Amount:** Once daily; 2–3 times a week is usually enough **Duration limit:** 1 week \[1\] ## Safety & interactions Minimum age: 12 years Duration limit: 7 days - Do not use for more than 1 week. If you need a laxative every day, the cause of constipation should be investigated. - Do not use with bowel obstruction, appendicitis, Crohn's disease, ulcerative colitis, abdominal pain of unknown cause or severe dehydration. - Do not use in children under 12. - Contraindicated in pregnancy and breastfeeding. - People with kidney disease may develop electrolyte imbalance. \[1\] ### Drug interactions | Medicine / substance | Effect | Severity | | --- | --- | --- | | Cardiac glycosides (e.g. digoxin), antiarrhythmics, QT-prolonging medicines | Low potassium from long-term use can increase their effects; ask a doctor first. [1] | Major | | Diuretics, corticosteroids, liquorice root | May increase potassium loss; ask a doctor first. [1] | Moderate | ### Side effects - Abdominal pain, cramps and watery stools (especially with an irritable bowel); reduce the dose - Allergic reactions such as itching, hives or rash - Yellow or red-brown urine, which is not clinically significant - With long-term use: discoloured bowel lining, loss of water and electrolytes #### ⚕ When to see a doctor - If high fever, shortness of breath or purulent/bloody phlegm develops - If symptoms do not improve within 1–2 weeks or worsen - If severe abdominal pain, jaundice, rash or allergic reaction occurs ## Did you know? Taking senna 2–3 times a week is usually enough; the EMA advises at most 1 week. \[1\] ## Frequently asked questions Does senna help with weight loss? No. The EMA only accepts short-term use for occasional constipation; using it to lose weight risks water and potassium loss. How long can senna be used? At most 1 week. Taking it 2–3 times in that week is usually enough. Can I take senna every day? No. Long-term use can cause a sluggish bowel and laxative dependence. When should senna be taken? At bedtime, using the lowest dose that gives a comfortable soft stool. ## Sources 1. [European Union herbal monograph on Senna alexandrina Mill. (Cassia senna L.; Cassia angustifolia Vahl), folium – Revision 1](https://www.ema.europa.eu/en/documents/herbal-monograph/final-european-union-herbal-monograph-senna-alexandrina-mill-cassia-senna-l-cassia-angustifolia-vahl-folium-revision-1_en.pdf) EMA HMPC · 2018 ### Cite This Page Senna (Senna alexandrina). Herbadex — Doğal Şifa Rehberi (2026). https://herbadex.com/en/herb/senna/ ## Related guides and comparisons - [Buying and Storing Herbs Safely at Home](https://herbadex.com/en/guide/buying-and-storing-herbs-safely/) - [Understanding Evidence Levels (A, B, C and T)](https://herbadex.com/en/guide/understanding-evidence-levels/) ## On this page At a glance What is it used for? How is it used? Safety & interactions Did you know? 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If you take medication, are pregnant, or have a health condition, talk to your doctor or pharmacist before use.