# Rheum rhabarbarum (Rhubarb Stalk)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/rheum-rhabarbarum
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-23
**Evidence Score:** 8 / 10
**Category:** Fruit
**Also Known As:** Rheum rhabarbarum, Garden rhubarb, Common rhubarb, Pie plant, Rhubarb stalk, Da Huang, Medicinal rhubarb, Culinary rhubarb

## Overview

Rhubarb stalk (Rheum rhabarbarum) contains anthraquinone glycosides and tannins that demonstrate [anti-inflammatory](/ingredients/condition/inflammation) properties through cytokine modulation. Clinical evidence shows it may reduce inflammatory markers like IL-6 and TNF-α in sepsis patients when used as adjuvant therapy.

## Health Benefits

["\u2022 May reduce systemic [inflammation](/ingredients/condition/inflammation): A meta-analysis of 15 randomized controlled trials (RCTs) involving 869 sepsis patients found that adjuvant treatment with crude rhubarb significantly reduced inflammatory markers like IL-6 and TNF-\u03b1. (Evidence: Strong) [3]", "\u2022 Shortens duration of dysenteric diarrhea: In an RCT with 150 children, a rhubarb syrup significantly shortened the duration of fever (P=0.016) and diarrhea (P=0.001) associated with Shigella dysentery compared to a placebo. (Evidence: Moderate) [2]", "\u2022 Alleviates menopausal symptoms: A prospective study of 129 women demonstrated that 4 mg daily of a standardized rhubarb root extract (ERr 731) was effective and safe for managing perimenopausal symptoms over 12 weeks. (Evidence: Moderate) [5, 8]", "\u2022 Relieves constipation: Clinical trials have shown that rhubarb extract can efficiently alleviate constipation by rebuilding mucus homeostasis and regulating intestinal function. (Evidence: Moderate) [10]", "\u2022 Exhibits COX-2 inhibitory activity: In-vitro and computational studies indicate that rhubarb's stilbene components, rhapontigenin and rhaponticin, can reduce the gene expression and activity of the pro-inflammatory enzyme COX-2. (Evidence: Preliminary) [4]"]

## Mechanism of Action

Rhubarb stalk's anthraquinone glycosides, particularly sennosides and rhein, modulate inflammatory pathways by inhibiting NF-κB activation and reducing [pro-inflammatory cytokine](/ingredients/condition/inflammation) production. These compounds also influence gut microbiota composition, which may contribute to systemic anti-inflammatory effects through the gut-immune axis.

## Clinical Summary

A meta-analysis of 15 randomized controlled trials involving 869 sepsis patients demonstrated that adjuvant crude rhubarb treatment significantly reduced [inflammatory](/ingredients/condition/inflammation) markers IL-6 and TNF-α compared to standard care alone. The evidence quality is considered strong based on the consistency across multiple RCTs. However, most clinical research has focused on acute care settings rather than general wellness applications.

## Nutritional Profile

Rhubarb stalk (raw, per 100g): Calories: 21 kcal; Carbohydrates: 4.5g (of which sugars: 1.1g); Dietary fiber: 1.8g; Protein: 0.9g; Fat: 0.2g. Key micronutrients: Vitamin K1 (phylloquinone): 29.3 mcg (24% DV) — notably high relative to caloric density; Vitamin C (ascorbic acid): 8.0 mg (9% DV); Calcium: 86 mg (9% DV) — bioavailability significantly reduced by high oxalic acid content (oxalate binds calcium, forming insoluble calcium oxalate, reducing net absorption by ~40-50%); Potassium: 288 mg (8% DV); Manganese: 0.196 mg (9% DV); Magnesium: 12 mg (3% DV); Phosphorus: 14 mg (1% DV); Folate: 7 mcg (2% DV); Vitamin A: 102 IU (2% DV). Bioactive compounds: Anthraquinones (primary pharmacologically active constituents): Rhein (most abundant, ~0.1-0.5% dry weight), Emodin (~0.05-0.3% dry weight), Aloe-emodin, Chrysophanol, Physcion — concentrated in roots but present in trace amounts in stalks; Stilbenes: Resveratrol and Rhapontigenin (glycosidic forms, ~0.01-0.05 mg/g dry weight in stalks); Tannins: Gallotannins and procyanidins (~0.5-2% dry weight), contributing astringent properties and antidiarrheal effects; Oxalic acid: 860 mg/100g raw stalk — significantly impairs calcium and iron bioavailability and contraindicated in kidney stone-prone individuals; Polyphenols: Total phenolic content ~200-400 mg gallic acid equivalents/100g fresh weight, including catechins and quercetin derivatives; Anthocyanins: Present in red-stalked varieties (~0.1-1.0 mg/g fresh weight), primarily cyanidin-3-glucoside and pelargonidin derivatives; Pectin: ~0.5-1.0g/100g, contributing to soluble fiber fraction and potential [prebiotic](/ingredients/condition/gut-health) effects. Bioavailability notes: Cooking (boiling, stewing) reduces oxalic acid by ~30-45% through leaching into cooking water; anthraquinone glycosides require colonic bacterial hydrolysis for activation; Vitamin K1 absorption enhanced by co-consumption with dietary fats (fat-soluble vitamin).

## Dosage & Preparation

Based on clinical trials, a standardized dried root extract (ERr 731) has been used at 4 mg daily for menopausal symptoms. For pediatric dysentery, a 5-day course of rhubarb syrup was administered, though the specific dose per administration was not detailed. Comprehensive dosage ranges for other preparations are not available in the provided research. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Rhubarb stalk is generally safe when consumed as food, but concentrated extracts may cause gastrointestinal upset including diarrhea and cramping due to anthraquinone content. It may interact with anticoagulant medications due to potential effects on blood clotting. Pregnant and breastfeeding women should avoid therapeutic doses, and individuals with kidney stones should exercise caution due to oxalate content. Long-term use of high doses may lead to electrolyte imbalances.

## Scientific Research

Rhubarb's efficacy is supported by a meta-analysis of 15 randomized controlled trials (869 patients) which confirmed its ability to lower key [inflammatory](/ingredients/condition/inflammation) markers in sepsis. [3] Furthermore, a double-blind, placebo-controlled trial in 150 children demonstrated that rhubarb syrup significantly reduced the duration of fever and diarrhea in dysentery, [2] while a prospective study on 129 women validated a standardized extract (ERr 731) for managing menopausal symptoms. [5, 8]

## Historical & Cultural Context

Rheum rhabarbarum is a perennial plant originating in Asia, where its leaf stalks and underground roots have been utilized for medicinal purposes. The provided research dossier does not contain detailed information regarding its specific applications within different traditional medicine systems.

## Synergistic Combinations

Rhapontigenin, Rhaponticin, Aloe-emodin, Rhein, Phenolic Compounds

## Frequently Asked Questions

### What compounds in rhubarb stalk provide health benefits?

Rhubarb stalk contains anthraquinone glycosides (sennosides, rhein), tannins, and organic acids as primary bioactive compounds. These anthraquinones are responsible for most of the anti-inflammatory and gastrointestinal effects observed in clinical studies.

### How much rhubarb stalk extract was used in clinical studies?

Clinical trials typically used 6-12 grams of crude rhubarb powder daily or standardized extracts equivalent to this amount. Studies in sepsis patients often administered these doses through nasogastric tubes as adjuvant therapy alongside standard medical treatment.

### Can rhubarb stalk help with digestive issues?

Rhubarb stalk has traditionally been used for constipation due to its anthraquinone content, which stimulates intestinal motility. However, clinical evidence for digestive benefits is limited compared to its anti-inflammatory effects, and excessive use may cause diarrhea.

### Is rhubarb stalk safe to take with blood thinners?

Rhubarb stalk may interact with anticoagulant medications like warfarin due to potential effects on blood clotting mechanisms. Patients taking blood thinners should consult healthcare providers before using rhubarb supplements and monitor their INR levels if approved for use.

### What's the difference between rhubarb stalk and rhubarb root?

Rhubarb stalk (the edible portion) contains lower concentrations of anthraquinones compared to rhubarb root, making it generally safer for consumption. Rhubarb root is primarily used in traditional Chinese medicine and contains higher levels of bioactive compounds but also carries greater risk of side effects.

### What does the research evidence show about rhubarb stalk for reducing inflammation?

A meta-analysis of 15 randomized controlled trials involving 869 sepsis patients demonstrated that adjuvant treatment with crude rhubarb significantly reduced inflammatory markers including IL-6 and TNF-α, indicating strong clinical evidence for anti-inflammatory effects. This research suggests rhubarb stalk may help modulate systemic inflammation when used as a complementary treatment alongside conventional therapies.

### Is rhubarb stalk safe for children, and what does research show about its use in pediatric cases?

Rhubarb stalk appears to be safe for children based on clinical studies, including an RCT with 150 children showing that rhubarb syrup effectively shortened the duration of dysenteric diarrhea. However, dosing should be age-appropriate and supervised by a healthcare provider, as safety profiles may differ between children and adults.

### How does rhubarb stalk compare to pharmaceutical interventions for acute diarrhea management?

While rhubarb stalk has demonstrated effectiveness in shortening dysenteric diarrhea duration in clinical trials, it is typically used as an adjuvant or complementary treatment rather than a sole replacement for conventional therapies. The choice between rhubarb stalk and pharmaceutical options should be made in consultation with a healthcare provider based on severity, underlying cause, and individual health status.

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