# Fritillaria thunbergii

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/fritillaria-thunbergii
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-19
**Evidence Score:** 4 / 10
**Category:** Traditional Chinese Medicine
**Also Known As:** Fritillaria thunbergii Miq., Zhe Beimu, Thunberg fritillary, Fritillariae Thunbergii Bulbus, FTB, Zhejiang fritillary bulb, Chinese fritillary

## Overview

Fritillaria thunbergii is a traditional Chinese medicinal bulb containing alkaloids like peimine and peiminine that target [inflammatory pathway](/ingredients/condition/inflammation)s. Research shows it may inhibit lung tumor growth and reduce inflammatory cytokines through PIK3CG and Bcl-2 pathway modulation.

## Health Benefits

• May inhibit lung tumor proliferation by downregulating cancer-related genes (PIK3CG, Bcl-2, VEGF) - based on preliminary mouse studies
• Demonstrates anti-inflammatory effects by reducing [pro-inflammatory cytokine](/ingredients/condition/inflammation)s IL-1β, TNF-α, and IL-6 - shown in cell studies only
• Shows potential for pulmonary fibrosis management through PI3K/AKT/FOXO pathway inhibition - preliminary evidence from mouse models
• Traditional use supports respiratory health as an expectorant and antitussive agent - based on historical use, no clinical trials
• May help with cough and phlegm reduction - traditional use only, lacks modern clinical validation

## Mechanism of Action

Fritillaria thunbergii's alkaloids peimine and peiminine downregulate cancer-related genes including PIK3CG, Bcl-2, and VEGF in lung tissue. The compounds also suppress [pro-inflammatory cytokine](/ingredients/condition/inflammation)s IL-1β, TNF-α, and IL-6 by inhibiting NF-κB signaling pathways. These mechanisms contribute to both anti-tumor and anti-inflammatory effects in pulmonary tissues.

## Clinical Summary

Current evidence for Fritillaria thunbergii is limited to preliminary animal and cell studies. Mouse studies demonstrated tumor growth inhibition through gene expression changes, while cell culture experiments showed significant [cytokine](/ingredients/condition/inflammation) reduction. No human clinical trials have been conducted to establish safety profiles or therapeutic dosing. The evidence quality remains low due to the lack of controlled human studies and small sample sizes in existing research.

## Nutritional Profile

Fritillaria thunbergii (Zhe Bei Mu) is a medicinal bulb with limited conventional nutritional characterization, but key constituents have been identified: PRIMARY BIOACTIVE ALKALOIDS (dominant compounds): Isosteroidal alkaloids are the principal active constituents — peimine (verticine) at approximately 0.1–0.5% dry weight and peiminine (verticinone) at approximately 0.05–0.3% dry weight are the most pharmacologically studied; these are responsible for the majority of reported biological effects. Additional alkaloids include zhebeinine, zhebeinone, and isoverticine at trace concentrations (<0.05% dry weight). STEROIDAL SAPONINS: Present in modest quantities; total saponin content estimated at 0.2–0.8% dry weight, contributing to expectorant and [anti-inflammatory](/ingredients/condition/inflammation) properties. POLYSACCHARIDES: Crude polysaccharide fraction constitutes approximately 3–8% of dry weight, with beta-glucans and fructans identified; these contribute to [immunomodulatory](/ingredients/condition/immune-support) activity noted in preliminary studies. NUCLEOSIDES: Adenosine and uridine detected at trace levels (micrograms per gram dry weight). CONVENTIONAL MACRONUTRIENTS (limited data from bulb composition): Carbohydrates constitute the majority of dry mass (approximately 60–70%), primarily as starch and polysaccharides; crude protein approximately 8–12% dry weight, with glutamic acid and aspartic acid as predominant amino acids; crude fat content low at approximately 1–3% dry weight. MINERALS: Potassium, calcium, and magnesium are present in measurable quantities based on general Fritillaria bulb analyses, though precise concentrations for F. thunbergii specifically are not well-documented in standardized databases. FIBER: Dietary fiber estimated at 5–10% dry weight. BIOAVAILABILITY NOTES: Alkaloid bioavailability is considered moderate; peimine and peiminine are absorbed via gastrointestinal tract but undergo significant first-pass hepatic [metabolism](/ingredients/condition/weight-management); traditional preparation as decoction (boiling in water) extracts water-soluble alkaloids and polysaccharides preferentially; typical therapeutic dose in TCM is 3–9 grams of dried bulb per day, yielding an estimated alkaloid intake of 3–45 mg total isosteroidal alkaloids per dose. Raw consumption is not standard due to potential toxicity of alkaloid concentration.

## Dosage & Preparation

No clinically studied human dosages available. Animal studies used 1 g/kg oral administration in rats for pharmacokinetic assessment. Standardization protocols for alkaloid content (peimine, peimisine, peiminine, sipeimine) are not established. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Fritillaria thunbergii safety data in humans is extremely limited due to lack of clinical trials. Traditional use suggests generally low toxicity, but specific side effects and optimal dosages remain undefined. The herb may interact with immunosuppressive medications due to its [anti-inflammatory](/ingredients/condition/inflammation) properties. Pregnant and breastfeeding women should avoid use due to insufficient safety data and potential alkaloid toxicity.

## Scientific Research

Current evidence is limited to preclinical studies with no human clinical trials identified. Key animal studies include lung cancer research in mice (PMID: 32805357) showing tumor proliferation inhibition and extended survival, and pulmonary fibrosis research (PMID: 39938765) demonstrating improved lung function in bleomycin-induced mice models.

## Historical & Cultural Context

In Traditional Chinese Medicine (TCM), Fritillaria thunbergii bulbs (Zhe Beimu) have been used for centuries to moisten lungs, relieve cough, reduce phlegm, and treat respiratory conditions including bronchitis. Traditional applications also included treatment for [inflammation](/ingredients/condition/inflammation), gastric ulcers, hypertension, and diarrhea.

## Synergistic Combinations

Licorice root, Platycodon grandiflorus, Schisandra berry, Loquat leaf, Mulberry leaf

## Frequently Asked Questions

### What are the active compounds in Fritillaria thunbergii?

The primary bioactive compounds are isosteroid alkaloids including peimine, peiminine, and peimisine. These alkaloids are responsible for the herb's anti-inflammatory and potential anti-tumor effects through gene expression modulation.

### How much Fritillaria thunbergii should I take daily?

No standardized dosing exists due to lack of human clinical trials. Traditional Chinese medicine typically uses 3-9 grams of the dried bulb daily. Consult a qualified practitioner before use as optimal therapeutic doses remain unestablished.

### Can Fritillaria thunbergii help with lung cancer?

Preliminary mouse studies show potential anti-tumor effects through PIK3CG and Bcl-2 gene downregulation. However, no human trials exist to confirm effectiveness or safety for cancer treatment. It should never replace conventional cancer therapy.

### What side effects does Fritillaria thunbergii cause?

Specific side effects are poorly documented due to limited research. Alkaloid content suggests potential for gastrointestinal upset or toxicity at high doses. Traditional use reports minimal adverse effects when used appropriately.

### Is Fritillaria thunbergii safe to take with medications?

Drug interaction data is insufficient due to lack of clinical studies. The herb's anti-inflammatory effects may theoretically interact with immunosuppressive drugs or blood thinners. Always consult healthcare providers before combining with prescription medications.

### What does clinical research show about Fritillaria thunbergii's effectiveness?

Current evidence for Fritillaria thunbergii comes primarily from preliminary cell and mouse studies rather than human clinical trials. Research suggests potential benefits for lung health through anti-inflammatory pathways and tumor-related gene modulation, but these findings have not yet been confirmed in controlled human studies. More robust clinical research is needed before definitive claims about its efficacy can be made. Consumers should view existing evidence as promising but preliminary.

### Who should avoid taking Fritillaria thunbergii?

Pregnant and breastfeeding women should avoid Fritillaria thunbergii due to insufficient safety data in these populations. Individuals with bleeding disorders or those taking anticoagulant medications should consult a healthcare provider before use, as some traditional alkaloid-containing herbs may affect clotting. People with severe kidney or liver disease should also exercise caution, as the herb's metabolism and elimination pathways are not fully characterized in compromised organ function.

### What is the difference between Fritillaria thunbergii and other Fritillaria species used in traditional medicine?

Fritillaria thunbergii is specifically valued in Traditional Chinese Medicine (TCM) for addressing heat-related lung conditions and phlegm accumulation, whereas other Fritillaria species like F. cirrhosa are used for similar but slightly different respiratory applications. The alkaloid profiles and potency vary between species, making them non-interchangeable in traditional formulations. Fritillaria thunbergii is native to specific regions of China and is considered particularly effective for dry cough and heat-induced lung inflammation in TCM practice.

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