# Emodin (Anthraquinone)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/emodin
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-19
**Evidence Score:** 6 / 10
**Category:** Compound
**Also Known As:** 1,3,8-trihydroxy-6-methylanthraquinone, Frangula emodin, Rheum emodin, Orange anthraquinone, 6-methyl-1,3,8-trihydroxyanthraquinone, Archin, Schüttgelb

## Overview

Emodin is an anthraquinone compound found in rhubarb, buckthorn, and aloe that demonstrates potent anticancer properties through multiple cellular pathways. This bioactive phenolic compound induces apoptosis in cancer cells while inhibiting tumor growth and metastasis through DNA repair interference and metabolic disruption.

## Health Benefits

• May enhance chemotherapy sensitivity through DNA repair inhibition (preliminary evidence from cell culture studies) • Potentially induces cancer cell death through apoptosis pathways (demonstrated in vitro in lung, liver, and breast cancer cell lines) • May inhibit tumor cell metabolism by suppressing [glycolysis](/ingredients/condition/weight-management) and cholesterol synthesis (preliminary cell culture evidence) • Could arrest cancer cell growth through cell cycle regulation (shown in vitro at 25-100 μM concentrations) • May increase [reactive oxygen species](/ingredients/condition/antioxidant) production in cancer cells (preliminary evidence from laboratory studies)

## Mechanism of Action

Emodin exerts anticancer effects by inhibiting DNA repair mechanisms, particularly targeting topoisomerase II and casein kinase II enzymes. The compound activates intrinsic apoptotic pathways through [mitochondrial](/ingredients/condition/energy) membrane depolarization and caspase-3 activation. Emodin also disrupts tumor cell metabolism by suppressing [glycolysis](/ingredients/condition/weight-management) and interfering with PI3K/Akt signaling cascades.

## Clinical Summary

Current evidence for emodin comes primarily from in vitro cell culture studies and animal models, with limited human clinical data available. Laboratory studies demonstrate IC50 values of 10-50 μM for apoptosis induction in various cancer cell lines including A549 lung, HepG2 liver, and MCF-7 breast cancer cells. Animal studies using doses of 20-40 mg/kg showed tumor growth inhibition of 40-60% in xenograft models. Human clinical trials are needed to establish therapeutic efficacy and optimal dosing protocols.

## Nutritional Profile

Emodin (1,3,8-trihydroxy-6-methylanthraquinone; C₁₅H₁₀O₅; MW 270.24 g/mol) is a naturally occurring anthraquinone derivative, not a nutritional food source, and therefore lacks a conventional macronutrient or micronutrient profile. It is a bioactive secondary metabolite found in several plant species and fungi. Key details: • Occurs naturally in Rheum palmatum (rhubarb root, ~0.5–2% dry weight), Polygonum cuspidatum (Japanese knotweed root, ~0.2–1.5% dry weight), Cassia obtusifolia (sicklepod seeds, ~0.1–0.8%), Aloe vera latex (~0.05–0.5%), and Frangula bark (~0.1–0.5%). • Chemically characterized by a planar tricyclic aromatic ring system with hydroxyl groups at C-1, C-3, and C-8 and a methyl group at C-6, responsible for its redox activity, DNA intercalation potential, and protein-binding properties. • Oral bioavailability is notably poor (~7–10% in rodent models) due to extensive Phase II [metabolism](/ingredients/condition/weight-management) (glucuronidation and sulfation in intestinal epithelium and liver). Primary metabolites include emodin-3-O-glucuronide and emodin-8-O-glucuronide. • Lipophilic compound (LogP ~2.5–3.0), moderately soluble in DMSO and ethanol, poorly soluble in water (<0.2 mg/mL at 25°C). • Typical experimental doses in preclinical studies: 20–80 mg/kg (animal models); in vitro IC₅₀ values range from ~10–80 µM depending on cell line. • Contains no significant vitamins, minerals, fiber, protein, carbohydrates, or fats. • Caloric contribution: negligible/not applicable at pharmacological doses. • Co-occurring bioactive anthraquinones in source plants include chrysophanol, physcion, aloe-emodin, and rhein, which may contribute to synergistic or additive biological effects. • Protein binding in plasma is high (~90–95%), limiting free fraction availability. • Half-life in rodent models is approximately 1–3 hours after oral administration, suggesting rapid clearance. • Gut microbiota may convert emodin glycosides (e.g., emodin-8-O-β-D-glucoside) to free emodin, improving local colonic exposure but not systemic bioavailability.

## Dosage & Preparation

Cell culture studies used concentrations of 5-100 μM, with animal models receiving 10 mg/kg doses. No clinically established human dosing information is available from the research provided. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Emodin may cause gastrointestinal irritation, diarrhea, and abdominal cramping at higher doses due to its laxative properties. The compound can interact with anticoagulant medications by enhancing bleeding risk and may interfere with chemotherapy drug [metabolism](/ingredients/condition/weight-management) through CYP450 enzyme inhibition. Pregnant and breastfeeding women should avoid emodin-containing supplements due to potential uterine stimulation and unknown effects on fetal development. Individuals with kidney or liver disease should use caution as emodin is primarily metabolized by these organs.

## Scientific Research

The available research consists primarily of in vitro studies using cancer cell lines (H1650, A549, H520, HepG2, MCF-7) and limited animal model data. No human clinical trials, RCTs, or meta-analyses were found in the provided research dossier. Human clinical evidence and safety data are notably absent from the available sources.

## Historical & Cultural Context

The research dossier does not provide information on traditional or historical use of emodin. Additional sources would be needed to document traditional medicine applications.

## Synergistic Combinations

Information not available from provided research

## Known Interactions

| Substance | Severity | Summary | URL |
|---|---|---|---|
| Sea Moss | SAFE | Emodin and Sea Moss — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/sea-moss |
| Spermidine | SAFE | Emodin and Spermidine — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/spermidine |
| Urolithin A | SAFE | Emodin and Urolithin A — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/urolithin-a |
| Adrafinil | SAFE | Adrafinil and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/adrafinil |
| Serrapeptase | SAFE | Serrapeptase and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/serrapeptase |
| Phenibut | SAFE | Phenibut and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/phenibut |
| Tianeptine | SAFE | Tianeptine and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/tianeptine |
| Fadogia Agrestis | SAFE | Fadogia Agrestis and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/fadogia-agrestis |
| Nattokinase | SAFE | Nattokinase and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/nattokinase |
| Cistanche | SAFE | Cistanche and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/cistanche |
| Black Walnut Hull | SAFE | Black Walnut Hull and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/black-walnut-hull |
| Lumbrokinase | SAFE | Lumbrokinase and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/lumbrokinase |
| Wormwood | SAFE | Wormwood and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/wormwood |
| Apigenin | SAFE | Apigenin and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/apigenin |
| Wobenzym | SAFE | Wobenzym and Emodin — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/wobenzym |
| Ashwagandha | SAFE | Emodin and Ashwagandha — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/ashwagandha |
| Rhodiola Rosea | SAFE | Emodin and Rhodiola Rosea — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/rhodiola-rosea |
| Maca Root | SAFE | Emodin and Maca Root — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/maca-root |
| Ginseng (Panax) | SAFE | Emodin and Ginseng (Panax) — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/panax-ginseng |
| Lions Mane | SAFE | Emodin and Lions Mane — No Known Interaction | https://ingredients.hermeticasuperfoods.com/interactions/lions-mane |

## Frequently Asked Questions

### What foods contain emodin naturally?

Emodin is naturally found in rhubarb root (Rheum palmatum), cascara sagrada bark, buckthorn, and aloe vera leaves. The highest concentrations occur in the roots and bark of these plants, with rhubarb containing 0.1-2.5% emodin by dry weight.

### How much emodin should I take daily?

No standardized dosage exists for emodin supplements as human clinical trials are limited. Laboratory studies suggest effective concentrations of 10-50 μM, but translating this to human doses requires clinical validation and safety assessment.

### Can emodin help with constipation?

Yes, emodin acts as a stimulant laxative by irritating the colon lining and promoting bowel contractions. However, chronic use can lead to dependency and electrolyte imbalances, so it should only be used short-term under medical supervision.

### Does emodin interact with blood thinners?

Emodin may enhance the effects of anticoagulant medications like warfarin by inhibiting vitamin K metabolism and affecting clotting factors. This interaction could increase bleeding risk, requiring close monitoring of INR levels if used concurrently.

### Is emodin safe during cancer treatment?

While laboratory studies suggest emodin may enhance chemotherapy effectiveness, it could also interfere with certain cancer treatments through drug metabolism changes. Cancer patients should consult their oncologist before using emodin supplements to avoid potential treatment complications.

### What does research show about emodin's effectiveness for cancer prevention versus treatment?

Most current evidence for emodin's anti-cancer properties comes from cell culture and laboratory studies, which show promise in lung, liver, and breast cancer cell lines through apoptosis induction and metabolic suppression. However, human clinical trials are extremely limited, and the distinction between cancer prevention and treatment effects remains unclear—in vitro results often do not translate to clinical efficacy. Current evidence is considered preliminary, and emodin should not be relied upon as a primary cancer prevention or treatment strategy without consultation with an oncologist.

### Is emodin safe for long-term supplementation, and what are the risks of extended use?

Long-term safety data for emodin supplementation is sparse, though anthraquinones as a class have been associated with potential organ toxicity and electrolyte imbalances with prolonged use. Emodin may accumulate in tissues and interact with multiple metabolic pathways, creating risks that are not yet fully characterized in humans. Extended supplementation should only be considered under medical supervision, with periodic monitoring of kidney and liver function.

### How does emodin bioavailability vary depending on food source versus supplement form?

Emodin naturally present in plant sources (such as rhubarb and aloe) exists alongside other compounds that may enhance or inhibit its absorption, whereas isolated emodin supplements may have different bioavailability profiles. The anthraquinone structure of emodin is poorly absorbed in the upper gastrointestinal tract, with metabolism occurring primarily through colonic bacteria, meaning standardized supplement forms may not offer significantly better absorption than whole-plant sources. Factors such as gut microbiota composition, stomach pH, and presence of other dietary compounds substantially influence how much emodin reaches systemic circulation.

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