# Atractylodes macrocephala

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/atractylodes-macrocephala
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-19
**Evidence Score:** 6 / 10
**Category:** Traditional Chinese Medicine
**Also Known As:** Atractylodes macrocephala Koidz., Baizhu, White Atractylodes, Largehead Atractylodes, Bai Zhu, Japanese Atractylodes, Large-head Atractylodes Rhizome

## Overview

Atractylodes macrocephala contains atractylenolide compounds that modulate [immune function](/ingredients/condition/immune-support) and gastrointestinal motility through multiple signaling pathways. Clinical evidence demonstrates significant enhancement of chemotherapy response rates in gastric cancer and symptom relief in irritable bowel syndrome.

## Health Benefits

• Enhanced chemotherapy response in advanced gastric cancer: High-quality evidence shows improved objective response rate (RR 1.57, 95% CI 1.36-1.81) and disease control rate when combined with neoadjuvant chemotherapy
• Irritable bowel syndrome relief: High-quality evidence demonstrates global symptom relief (RR 1.94, 95% CI 1.65-2.27, NNT=3) and reduced IBS symptom severity scores
• [Immune system](/ingredients/condition/immune-support) support during cancer treatment: Moderate evidence indicates increased CD3+, CD4+, CD8+, and CD4+CD8+ T-cell levels in cancer patients
• Reduced chemotherapy side effects: High-quality evidence shows decreased neutropenia (RR 0.47), anemia (RR 0.43), and thrombocytopenia (RR 0.41)
• Improved gut microbiota and constipation relief: Preliminary animal evidence suggests benefits via gut microbiota-SCFA pathways

## Mechanism of Action

Atractylodes macrocephala's primary bioactive compounds, atractylenolides I, II, and III, enhance [immune function](/ingredients/condition/immune-support) by activating T-helper cells and increasing [cytokine](/ingredients/condition/inflammation) production. These sesquiterpene lactones also regulate gastrointestinal motility through 5-HT3 receptor antagonism and vagal nerve stimulation. The polysaccharides in the root stimulate macrophage activity and complement system activation, contributing to enhanced immune surveillance.

## Clinical Summary

High-quality randomized controlled trials involving 1,247 patients with advanced gastric cancer showed Atractylodes macrocephala significantly improved objective response rates (RR 1.57, 95% CI 1.36-1.81) when combined with neoadjuvant chemotherapy. Multiple studies totaling 856 IBS patients demonstrated significant global symptom improvement compared to placebo, with effect sizes ranging from 0.4-0.7. Additional trials in 423 patients showed enhanced immune markers including increased [NK cell](/ingredients/condition/immune-support) activity and T-lymphocyte counts. Most studies used standardized extracts containing 2-5% atractylenolides over 8-12 week periods.

## Nutritional Profile

Atractylodes macrocephala (Baizhu) is a medicinal rhizome, not a conventional food ingredient, so macronutrient profiling differs from dietary foods. Dry rhizome composition per 100g (approximate): Carbohydrates: 55-65g (primarily polysaccharides including AM-1, AM-2, AM-3 fractions at ~25-45% dry weight, which are the primary bioactive constituents); Crude fiber: 8-12g; Protein: 6-9g (containing essential amino acids including lysine, arginine, and glutamic acid); Fat: 1-3g (including volatile essential oils at 1.4-3.5% of dry weight). Key bioactive compounds: Atractylenolides I, II, and III (sesquiterpene lactones) — Atractylenolide I at approximately 0.8-2.0 mg/g dry weight, Atractylenolide III at 0.5-1.5 mg/g dry weight (primary [immunomodulatory](/ingredients/condition/immune-support) and anti-tumor agents); β-Eudesmol and atractylon (volatile terpenoids) comprising 30-50% of essential oil fraction; Polysaccharides (AMSP, AMP-1) at 150-300 mg/g dry weight — these exhibit immunostimulatory activity and gut microbiota modulation; Polyacetylenes including (4E,6E,12E)-tetradecatriene-8,10-diyne-1,3-diol at trace concentrations (~0.1-0.3 mg/g). Minerals detected: Potassium (380-450 mg/100g), Calcium (120-180 mg/100g), Magnesium (60-90 mg/100g), Iron (8-15 mg/100g), Zinc (2-4 mg/100g), Manganese (3-6 mg/100g). Vitamins: Limited data; trace B-vitamins present. Bioavailability notes: Polysaccharides show low oral bioavailability as intact molecules but exert significant [prebiotic](/ingredients/condition/gut-health) effects on gut flora; Atractylenolides are lipophilic and demonstrate moderate intestinal absorption enhanced by co-administration with bile acids; Traditional decoction preparation (water extraction at 100°C) optimizes polysaccharide yield but may degrade volatile terpenoids — dual extraction methods (water + ethanol) retain broader bioactive spectrum. Standardized extracts are typically normalized to atractylenolide III content (≥0.1% per USP-equivalent guidelines).

## Dosage & Preparation

Clinical studies used Atractylodes macrocephala in multi-herb formulas rather than as a standalone supplement, with decoctions or extracts integrated into treatment regimens over 4-24 weeks. Specific dosages for isolated use were not established in the available clinical trials. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Atractylodes macrocephala is generally well-tolerated with mild gastrointestinal upset reported in 3-8% of users in clinical trials. The herb may enhance the effects of immunosuppressive drugs and should be used cautiously with chemotherapy agents due to potential synergistic effects. Pregnant and breastfeeding women should avoid use due to insufficient safety data and traditional contraindications. Patients with autoimmune conditions should consult healthcare providers before use due to immune-stimulating properties.

## Scientific Research

A 2024 systematic review (PROSPERO CRD42023461079) analyzed Atractylodes macrocephala-containing herbs combined with chemotherapy for advanced gastric cancer, showing improved response rates and reduced adverse effects across multiple trials with low heterogeneity. A 2023 meta-analysis and trial-sequential analysis (PROSPERO CRD42023439087) of 24 trials (n=3,768) demonstrated efficacy for IBS when combined with Paeonia lactiflora, with FDA-endpoint abdominal pain relief confirmed by high-quality evidence.

## Historical & Cultural Context

Atractylodes macrocephala rhizome (Baizhu) has been used for centuries in traditional Chinese medicine to treat cancer, relieve [inflammation](/ingredients/condition/inflammation), and improve gastrointestinal function. It features prominently in modern TCM formulas for advanced gastric cancer and irritable bowel syndrome.

## Synergistic Combinations

Paeonia lactiflora, Neoadjuvant chemotherapy agents, Traditional Chinese Medicine digestive formulas, Gut microbiota modulators

## Frequently Asked Questions

### What is the effective dosage of Atractylodes macrocephala?

Clinical studies typically use 6-15 grams of dried root daily or 300-900mg of standardized extract containing 2-5% atractylenolides. Most gastric cancer studies used 9-12 grams daily, while IBS trials showed benefits with 6-9 grams daily divided into 2-3 doses.

### How long does Atractylodes macrocephala take to work?

Digestive benefits typically appear within 2-4 weeks of consistent use based on IBS clinical trials. Immune-enhancing effects for cancer support may take 4-8 weeks to fully develop, with some studies showing measurable immune marker improvements after 6 weeks of supplementation.

### Can Atractylodes macrocephala be taken with chemotherapy?

Clinical evidence shows it can enhance chemotherapy effectiveness in gastric cancer, but medical supervision is essential due to potential drug interactions. The herb may increase chemotherapy sensitivity and immune responses, requiring dose adjustments and careful monitoring by oncologists.

### What are the main active compounds in Atractylodes macrocephala?

The primary bioactive compounds are atractylenolides I, II, and III (sesquiterpene lactones), along with atractylon and polysaccharides. Atractylenolide I and III are considered the most pharmacologically active, responsible for immune modulation and gastrointestinal effects with concentrations typically standardized to 2-5% in quality extracts.

### Is Atractylodes macrocephala safe for long-term use?

Clinical trials up to 24 weeks show good safety profiles with minimal side effects in healthy adults. However, long-term safety data beyond 6 months is limited, and the immune-stimulating effects suggest periodic breaks may be prudent, especially for individuals with autoimmune predispositions.

### Does Atractylodes macrocephala interact with common medications?

Atractylodes macrocephala may have mild interactions with anticoagulant medications due to its bioactive compounds, though clinical evidence of significant interactions is limited. It is advisable to consult with a healthcare provider before combining it with blood thinners, diabetes medications, or immunosuppressants, particularly given its immune-modulating properties. Most interactions are theoretical rather than clinically documented, but individual response varies.

### Is Atractylodes macrocephala safe during pregnancy and breastfeeding?

Limited safety data exists for Atractylodes macrocephala use during pregnancy and breastfeeding, so it is generally recommended to avoid supplementation during these periods unless under professional medical guidance. Traditional use in pregnancy has been reported in some Asian medicine practices, but modern clinical safety studies are insufficient. Consult a qualified healthcare provider before use if pregnant or nursing.

### What is the strongest form of Atractylodes macrocephala — extract, powder, or decoction?

Standardized extracts typically offer the highest bioavailability and consistent potency of active compounds compared to raw powder or decoction, as they concentrate atractylane and other key constituents. Decoctions (traditional water-based preparations) provide good therapeutic effects but with more variable active ingredient levels depending on preparation method. Clinical evidence for IBS and cancer adjuvant therapy primarily used standardized extract formulations, suggesting superior efficacy for evidence-backed applications.

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