# Senna (Cassia angustifolia)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/senna
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-19
**Evidence Score:** 8 / 10
**Category:** Middle Eastern
**Also Known As:** Cassia angustifolia, Cassia acutifolia, Alexandria senna, Tinnevelly senna, Indian senna, Cassia senna, Senna alexandrina

## Overview

Senna (Cassia angustifolia) contains sennosides that stimulate colonic contractions and promote bowel movements through irritation of intestinal mucosa. The plant also demonstrates alpha-glucosidase inhibition potential in laboratory studies, suggesting possible blood sugar management effects.

## Health Benefits

• Alpha-glucosidase inhibition potential shown in vitro (hexane and crude extracts), though no human clinical evidence available
• Traditional laxative effects implied by sennoside content (0.43±0.01 mg/g), but no clinical trials provided
• Phenolic content in ethyl acetate fractions (382.25 μg/mL gallic acid equivalents) suggests [antioxidant](/ingredients/condition/antioxidant) potential, though unverified in humans
• Limited evidence quality - all benefits based on in vitro studies or traditional use assumptions
• No clinical trials, RCTs, or meta-analyses available to support health claims

## Mechanism of Action

Sennosides, the primary bioactive compounds, are metabolized by colonic bacteria into rhein anthrone, which irritates the intestinal mucosa and stimulates peristaltic contractions. The hexane and crude extracts demonstrate alpha-glucosidase enzyme inhibition in vitro, potentially reducing carbohydrate [digestion](/ingredients/condition/gut-health) and glucose absorption. Phenolic compounds in ethyl acetate fractions may contribute additional [antioxidant activity](/ingredients/condition/antioxidant).

## Clinical Summary

Current evidence is limited to in vitro studies showing alpha-glucosidase inhibition activity in hexane and crude extracts. No human clinical trials have been conducted to validate the traditional laxative effects or blood sugar management properties. The sennoside content has been quantified at 0.43±0.01 mg/g in laboratory analysis. Clinical research is needed to establish safety, efficacy, and optimal dosing protocols.

## Nutritional Profile

Senna (Cassia angustifolia) is used medicinally rather than as a dietary food source, so macronutrient profiling is limited. Bioactive compounds are the primary nutritional focus: Sennosides (anthraquinone glycosides) measured at 0.43±0.01 mg/g dry weight, comprising primarily sennoside A and sennoside B as the principal laxative constituents. Total phenolic content varies by extraction fraction — ethyl acetate fraction yields approximately 382.25 μg/mL gallic acid equivalents, indicating moderate-to-high polyphenol concentration; hexane and crude extracts show comparatively lower phenolic density. Flavonoid compounds including kaempferol and its glycosides are present, alongside isorhamnetin and quercetin derivatives. Anthraquinones beyond sennosides include rhein, aloe-emodin, and chrysophanol at trace levels. Crude fiber content in dried leaf material is estimated at 10–15% of dry weight based on genus-level data. Protein content is low, approximately 10–13% of dry weight in raw leaf. Mineral content includes potassium, calcium, and magnesium at concentrations typical of dried leguminous leaves, though precise values for C. angustifolia specifically are not well-documented in isolation. Bioavailability note: Sennosides are poorly absorbed in the small intestine and require colonic bacterial hydrolysis to active rhein-anthrone metabolites, explaining the delayed laxative onset of 6–12 hours. Phenolic bioavailability is extraction-method dependent, with ethyl acetate fractions showing superior in vitro activity over hexane fractions.

## Dosage & Preparation

No clinically studied dosage ranges are available from human trials. Analytical studies report sennoside B content at 0.43±0.01 mg/g in leaf extracts and 1.525% in ethyl acetate fractions per ASEAN-herbal-medicine standards, but without associated therapeutic dosing guidelines. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Long-term use of senna can cause electrolyte imbalances, dependency, and colonic atony due to chronic stimulation of bowel contractions. Senna may interact with digoxin by reducing potassium levels and with anticoagulants by affecting vitamin K absorption. Contraindicated in pregnancy, breastfeeding, and individuals with [inflammatory](/ingredients/condition/inflammation) bowel diseases or intestinal obstruction. Short-term use under medical supervision is generally considered safer than prolonged consumption.

## Scientific Research

The research dossier reveals a complete absence of human clinical trials, randomized controlled trials (RCTs), or meta-analyses for Senna (Cassia angustifolia). Available data is limited to in vitro enzyme inhibition studies (α-glucosidase inhibition compared to acarbose) and analytical validation of sennoside B content (0.43±0.01 mg/g via UPLC-ESI-MRM/MS), with no PubMed PMIDs provided for clinical studies.

## Historical & Cultural Context

Senna leaves are sourced from Iranian medicinal plant markets, suggesting historical use in regional traditional medicine systems. However, the research provides no specific details about traditional applications, historical duration of use, or cultural significance within Unani or other traditional medicine frameworks.

## Synergistic Combinations

Insufficient research to determine synergistic ingredients

## Frequently Asked Questions

### How much sennosides does senna contain?

Senna contains approximately 0.43±0.01 mg/g of sennosides according to laboratory analysis. These compounds are responsible for the plant's traditional laxative effects through stimulation of colonic contractions.

### Can senna help with blood sugar control?

In vitro studies show senna's hexane and crude extracts can inhibit alpha-glucosidase enzymes, which could theoretically reduce glucose absorption. However, no human clinical trials have confirmed this effect for blood sugar management.

### Is long-term senna use safe?

Long-term senna use is not recommended as it can cause electrolyte imbalances, bowel dependency, and colonic atony. Medical supervision is advised even for short-term use to prevent complications.

### What drugs interact with senna?

Senna may interact with digoxin by reducing potassium levels and with anticoagulants by affecting vitamin K absorption. It can also interfere with medications requiring consistent electrolyte levels due to its laxative effects.

### What are senna's active compounds?

Senna's primary bioactive compounds are sennosides, which are converted by gut bacteria into rhein anthrone that stimulates bowel movements. The plant also contains phenolic compounds with potential antioxidant properties.

### Is senna safe during pregnancy and breastfeeding?

Senna is generally not recommended during pregnancy as sennosides may stimulate uterine contractions and increase the risk of miscarriage or premature labor. While limited data exists on senna use during breastfeeding, it is considered potentially unsafe as sennosides may pass into breast milk and cause gastrointestinal distress in infants. Pregnant and nursing women should consult a healthcare provider before using senna supplements.

### What is the difference between senna leaf and senna pod preparations?

Senna leaf and senna pod both contain sennosides but differ in potency and side effect profiles, with pods typically containing higher sennoside concentrations and causing less abdominal cramping. Senna leaf is often preferred for milder laxative effects, while pods are reserved for more severe constipation due to stronger activity. The choice between forms should depend on individual tolerance and the severity of symptoms being addressed.

### Who should avoid taking senna supplements?

Senna should be avoided by individuals with inflammatory bowel conditions (Crohn's disease, ulcerative colitis), bowel obstruction, appendicitis, or acute abdominal pain, as it may worsen these conditions. Children under 2 years of age and individuals with severe electrolyte imbalances should not use senna without medical supervision. Those taking potassium-depleting medications or with kidney disease should consult a healthcare provider before use, as chronic senna use may lead to potassium loss.

---

*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
*License: CC BY-NC-SA 4.0 — Attribution required. Commercial use: admin@hermeticasuperfoods.com*