# Sennoside C

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/sennoside-c
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-29
**Evidence Score:** 2 / 10
**Category:** Compound
**Also Known As:** Senna anthraquinone glycoside C, Cassia senna sennoside C, Alexandrian senna compound C, Anthraquinone glycoside C, Senna alexandrina sennoside C, Sennoside C glycoside

## Overview

Sennoside C is a dianthrone glycoside anthraquinone found in senna (Cassia species) that functions primarily as a stimulant laxative. It is converted by colonic bacteria into rheinanthrone, the active metabolite that stimulates intestinal smooth muscle and alters electrolyte transport to promote bowel movements.

## Health Benefits

• Increases intestinal motility, aiding in constipation relief (evidence from general senna trials, not specific to Sennoside C).
• Alters colon electrolyte transport, contributing to laxative effects (general evidence for sennosides).
• Inhibits amyloid formation, suggesting potential protein interaction benefits (in-vitro evidence).
• Used traditionally for over a thousand years for bowel regulation (historical use evidence).
• Safe short-term use in adults for improved bowel frequency (general senna studies).

## Mechanism of Action

Sennoside C is metabolized by colonic microflora into rheinanthrone, which stimulates enteric nerves and smooth muscle via [prostaglandin](/ingredients/condition/inflammation)-mediated pathways, increasing peristalsis and intestinal motility. Rheinanthrone also inhibits colonic Na+/K+-ATPase activity, reducing water and electrolyte absorption and increasing luminal fluid content to soften stool. Separately, in vitro research suggests Sennoside C may inhibit beta-amyloid fibril formation, potentially interfering with aggregation pathways relevant to neurodegenerative disease, though this mechanism remains poorly characterized in vivo.

## Clinical Summary

Clinical evidence for Sennoside C specifically is sparse; most human trials study mixed sennoside preparations (Sennosides A and B dominant) rather than isolated Sennoside C. Randomized controlled trials of senna-derived sennoside mixtures have demonstrated significant relief of constipation versus placebo in doses of 12–36 mg total sennosides daily, but Sennoside C's individual contribution cannot be quantified from these studies. One in vitro study identified Sennoside C as an amyloid inhibitor, but no human or animal trials have evaluated this effect. Overall, the evidence base for Sennoside C as a distinct compound is preclinical or extrapolated from general senna research, making confident efficacy claims premature.

## Nutritional Profile

Sennoside C is a pure isolated anthraquinone glycoside compound (dianthrone glycoside), not a whole food ingredient, and therefore has no conventional macronutrient or micronutrient profile. It is not a source of calories, protein, fat, carbohydrates, vitamins, or dietary minerals in any meaningful nutritional sense. Chemically, it is a heterodianthrone glycoside with molecular formula C₄₂H₃₈O₂₀ and molecular weight of approximately 862.73 g/mol, structurally distinct from Sennosides A and B in that it is a mixed glycoside of rhein and aloe-emodin moieties linked via a C-C bond at the 10,10' position. Bioactive compound concentration: Sennoside C typically constitutes a minor fraction (estimated 1–5%) of the total sennoside content in Senna leaf extracts, compared to the dominant Sennosides A and B which together account for roughly 60–80% of total sennosides. In standardized senna preparations (e.g., 20 mg total sennosides), Sennoside C may be present at approximately 0.5–2 mg. Bioavailability: Sennoside C is poorly absorbed in the small intestine due to its large polar glycoside structure. It is transported largely intact to the colon, where gut microbiota (primarily Bifidobacterium and Eubacterium spp.) hydrolyze the glycosidic bonds and reduce the anthraquinone nucleus to produce active metabolites, principally rhein-anthrone and aloe-emodin-anthrone, which are the pharmacologically active laxative species. Systemic absorption of these metabolites is low (estimated <5% of administered dose reaches systemic circulation). No fiber, protein, lipid, or micronutrient content is attributable to this isolated compound.

## Dosage & Preparation

Clinically studied dosages for senna products standardized to total sennosides range from 15-30 mg daily in adults. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Sennoside C, like other sennosides, may cause abdominal cramping, diarrhea, and electrolyte imbalances—particularly hypokalemia—with prolonged or high-dose use. Chronic use is associated with melanosis coli, a reversible pigmentation of the colon, and potential dependency if used habitually as a laxative. It may interact with cardiac glycosides (e.g., digoxin) by exacerbating potassium loss, and concurrent use with other laxatives or diuretics increases electrolyte depletion risk. Sennoside-containing products are generally contraindicated in pregnancy beyond occasional short-term use, in intestinal obstruction, and in [inflammatory](/ingredients/condition/inflammation) bowel conditions such as Crohn's disease or ulcerative colitis.

## Scientific Research

No key human clinical trials or meta-analyses specifically on Sennoside C were found. Evidence pertains to sennosides broadly, used as a laxative, with general senna trials demonstrating efficacy in constipation relief.

## Historical & Cultural Context

Sennoside C, from Senna alexandrina, has been used in traditional medicine systems like Unani and Ayurveda for over a thousand years. It was commonly included in 19th-century European pharmacopeias as a natural laxative.

## Synergistic Combinations

Psyllium husk, magnesium citrate, [probiotic](/ingredients/condition/gut-health)s, ginger, peppermint oil

## Frequently Asked Questions

### What is Sennoside C and how does it differ from Sennoside A and B?

Sennoside C is a heterodianthrone glycoside composed of one rhein and one aloe-emodin unit linked glycosidically, distinguishing it structurally from Sennoside A and B, which are homodianthrone glycosides derived solely from rhein. This structural difference may affect its potency and the rate at which colonic bacteria convert it to its active metabolite rheinanthrone. Sennoside A and B are present in higher concentrations in commercial senna preparations and have been studied more extensively.

### Can Sennoside C help with constipation?

Sennoside C contributes to the laxative effect of senna products by being converted by gut bacteria into rheinanthrone, which stimulates colonic peristalsis and reduces water reabsorption. However, no clinical trials have isolated Sennoside C's specific laxative potency; its effect is inferred from mixed sennoside studies using doses of 12–36 mg total sennosides daily. It is considered a minor contributor compared to Sennoside A and B in standard senna formulations.

### Is Sennoside C safe to take every day?

Daily long-term use of sennoside-containing products, including those with Sennoside C, is not recommended due to risks of electrolyte imbalances (particularly hypokalemia), laxative dependency, and melanosis coli. Most guidelines suggest limiting senna-based laxative use to short courses of 1–2 weeks unless under medical supervision. Individuals with kidney disease, heart conditions, or those on diuretics or digoxin should consult a physician before regular use.

### Does Sennoside C have anti-amyloid or neuroprotective effects?

In vitro research has identified Sennoside C as an inhibitor of beta-amyloid fibril formation, which is relevant to Alzheimer's disease pathology, but this finding has not been validated in animal models or human clinical trials. The concentration required for amyloid inhibition in cell studies may not be achievable through oral supplementation at standard doses. This remains a speculative and early-stage area of research that should not be interpreted as a clinically proven neuroprotective benefit.

### What foods or supplements contain Sennoside C?

Sennoside C is found naturally in the leaves and pods of Cassia senna (Alexandrian senna) and Cassia angustifolia (Indian senna), the same plants used to produce commercial senna laxative products. It is present in standardized senna leaf extracts, senna tea, and over-the-counter laxative tablets, though typically at lower concentrations than Sennoside A and B. Supplement labels rarely quantify Sennoside C individually; products are usually standardized to total sennoside content.

### How long does it typically take for Sennoside C to produce a laxative effect?

Sennoside C, like other sennosides, typically produces a laxative effect within 6 to 12 hours of ingestion, though some individuals may experience results within 8 hours. The onset time can vary depending on individual gut sensitivity, food intake, and overall digestive health. For consistent results, it is generally recommended to take sennoside-containing supplements in the evening to expect effects the following morning.

### Should pregnant women or nursing mothers avoid Sennoside C?

Pregnant women should generally avoid Sennoside C, as stimulant laxatives may increase uterine contractions and pose potential risks during pregnancy. While limited data exists on sennoside transfer through breast milk, nursing mothers should consult healthcare providers before use to ensure safety for their infants. Medical guidance is strongly advised before using sennoside supplements during pregnancy or lactation.

### Does Sennoside C interact with medications used to treat heart conditions or electrolyte imbalances?

Sennoside C can alter colon electrolyte transport, potentially affecting potassium and other mineral levels, which may interact with cardiac medications or electrolyte-regulating drugs. Individuals taking diuretics, potassium supplements, or heart medications should consult with a healthcare provider before using sennoside-containing supplements. Chronic use of sennosides can lead to electrolyte depletion, which is particularly concerning for those with existing cardiovascular or kidney conditions.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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