How does Atractylodes macrocephala work in the body?

Atractylodes macrocephala exerts its effects through active compounds including atractylone, beta-eudesmol, atractylodin, and polysaccharides. These constituents support digestive function by enhancing gastrointestinal motility and nutrient absorption. The polysaccharides demonstrate immunomodulatory properties, while volatile oils contribute anti-inflammatory activity. In traditional Chinese medicine terms, it strengthens spleen qi and dries dampness, making it a foundational herb for digestive and immune support. Evidence level: C.

Does Atractylodes macrocephala interact with any medications?

Currently, there are no well-documented drug interactions for Atractylodes macrocephala in medical literature. However, due to its immunomodulatory polysaccharides and effects on gastrointestinal motility, theoretical interactions with immunosuppressant medications or drugs affecting digestion may exist. Patients taking prescription medications should consult a qualified healthcare provider before adding this herb to their regimen. Evidence level: C.

What is the recommended dosage for Atractylodes macrocephala?

The standard adult dosage for Atractylodes macrocephala is 6-12 grams of dried rhizome daily, or 500-1000mg of standardized extract. In traditional Chinese medicine practice, it is typically decocted as a tea or combined with other herbs in formulated prescriptions. Dosage may vary based on individual constitution and the specific condition being addressed. Consult a qualified practitioner for personalized recommendations. Evidence level: Traditional.

Is Atractylodes macrocephala safe during pregnancy?

Yes, Atractylodes macrocephala is considered safe during pregnancy and is specifically indicated for preventing miscarriage and calming the fetus in traditional Chinese medicine. It strengthens spleen qi to help stabilize pregnancy, particularly in cases of threatened miscarriage accompanied by lower back pain or mild spotting. However, pregnant women should use this herb only under the guidance of a qualified TCM practitioner. Evidence level: Traditional.

What are the side effects of Atractylodes macrocephala?

Atractylodes macrocephala is generally well-tolerated. The most common side effect is gastrointestinal dryness, particularly with prolonged use or excessive dosing, due to its dampness-drying properties. Rare allergic reactions have been reported. In traditional Chinese medicine, it is contraindicated in cases of yin deficiency with fire, or conditions of excess heat. Discontinue use if dry mouth, constipation, or discomfort occurs. Evidence level: C.

Atractylodes Rhizome (Atractylodes macrocephala)

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 29 PubMed articles · model: gemma4:31b

Summary

Atractylodes macrocephala is a traditional Chinese medicinal herb used primarily for gastrointestinal disorders and inflammatory diseases [PMID:40490795, 41617265]. It is recognized for its anti-inflammatory, antioxidant, and immunomodulatory activities [PMID:42313997].

Background

Atractylodes macrocephala is a perennial herbaceous plant of the Asteraceae family native to China [PMID:30722298]. Its biennial root, known as Largehead Atractylodes Rhizome (LAR) or Baizhu, is a common Chinese materia medica [PMID:30722298, 38797027].

Traditional uses

Traditionally used to strengthen the spleen, benefit qi, dry dampness, promote water circulation, and prevent miscarriage [PMID:35760256]. It is clinically used to treat reduced digestive function, abdominal distension, and diarrhea caused by spleen deficiency [PMID:38797027], and is used to prevent early pregnancy loss due to miscarriage [PMID:30722298].

Active compounds

Key compounds include polysaccharides (composed of glucose, galactose, rhamnose, arabinose, mannose, galacturonic acid, and xylose) [PMID:36091757], sesquiterpenes such as atractylenolide III [PMID:36948639], volatile oils [PMID:36091757], and acetylenes [PMID:17269075].

Mechanism of action

The herb acts by modulating the gut microbiota and tryptophan metabolism to protect the gut barrier and exert anti-inflammatory effects, often associated with the Th17 cell differentiation signaling pathway [PMID:40490795, 39667762]. Specific compounds inhibit the production of nitric oxide (NO) and prostaglandin E2 (PGE2) by suppressing iNOS and COX-2 protein/mRNA levels and inhibiting NF-κB transcriptional activity [PMID:31091823]. Polysaccharides may also regulate the SIRT1/Nlrp3/caspase-1 pathway [PMID:40446979] and the PI3K/Akt signaling pathway [PMID:41475736].

Clinical evidence

Evidence AChronic Gastritis

Shen-ling-bai-zhu san (a formula containing A. macrocephala) is widely used for treating chronic gastritis [PMID:36156925]

Evidence DUlcerative Colitis (Animal Models)

A. macrocephala-derived extracellular vesicle-like particles, polysaccharides (PAMK, AMP1, AMP), and carbon dots ameliorate colitis by remodeling intestinal microecological balance and restoring barrier integrity [PMID:40490795, 39667762, 41617265, 41475736, 40611517]

Evidence DNon-Alcoholic Steatohepatitis (Animal Models)

Polysaccharides (PAMK) reduced liver steatosis, fibrosis, and inflammatory markers (IL-6, IL-1β, TNF-α) in mice [PMID:39599623, 42313997]

Evidence DSalt-Sensitive Hypertension (Animal Models)

Polysaccharides (PAMK) attenuated blood pressure and renal injury by suppressing the SIRT1/Nlrp3/caspase-1 pathway [PMID:40446979]

Evidence DChemotherapy-Induced Depression/Diarrhea (Animal Models)

Polysaccharides improved depression-like behaviors and reduced hippocampal inflammation [PMID:41155481]; volatile oil combined with Panax ginseng saponins improved diarrhea scores [PMID:41317807]

Pregnancy & lactation

Traditionally used to prevent miscarriage [PMID:35760256, 30722298]. However, its safety in breastfeeding is unknown [PMID:42313997].

Evidence summary

Evidence is primarily based on preclinical animal models (D) and traditional use (C), with one meta-analysis (A) regarding its use in a complex formula for chronic gastritis. Most findings focus on the modulatory effects of polysaccharides on the gut-brain and gut-liver axes.

PubMed sources

1.PMID: 40490795 (2025) — Atractylodes macrocephala-derived extracellular vesicles-like particles enhance the recovery of ulcerative colitis by remodeling intestinal microecological balance. · Journal of nanobiotechnology
2.PMID: 39667762 (2025) — Atractylodes macrocephala Koidz polysaccharide ameliorates DSS-induced colitis in mice by regulating the gut microbiota and tryptophan metabolism. · British journal of pharmacology
3.PMID: 42313997 (2006) — Zexie Tang Polysaccharides (ZXTPs) alleviate high-fat diet-induced NAFL in mice through improving intestinal microbiota imbalance and liver metabolic dysfunction. · Carbohydrate polymers
4.PMID: 36948639 (2023) — Atractylodes macrocephala Rhizomes Contain Anti-inflammatory Sesquiterpenes. · Chemical & pharmaceutical bulletin
5.PMID: 31091823

Atractylodes Rhizome

Sources & Citations