Chuan Bei Mu is the dried bulb of Fritillaria cirrhosa, a small alpine plant native to Sichuan, Yunnan, and Tibet. It is one of the most prized respiratory herbs in Traditional Chinese Medicine (TCM), classified as sweet, bitter, and cooling in nature. It differs from its close relative Zhe Bei Mu (Fritillaria thunbergii) in that it is considered gentler and better suited for dry, deficient-type coughs rather than thick, productive phlegm.

The herb works primarily through its steroidal alkaloids — especially peiminine and verticinone — which help relax the smooth muscle of the airways, making it easier to breathe and reducing the cough reflex. These compounds also appear to thin and loosen mucus, making it easier to clear without harsh irritation. There is also research suggesting anti-inflammatory effects in the airways, which may explain its benefit in chronic conditions like bronchitis and asthma.

Chuan Bei Mu is most traditionally used as a fine powder or in decoctions (simmered teas), often combined with other herbs like Fritillaria (Zhe Bei Mu), Pear (Li), or Lily bulb. Modern formats include capsules, standardized liquid extracts, and prepared syrups. It is also a key ingredient in several classical TCM formulas such as Bei Mu Gua Lou San. When buying standalone supplements, look for products that specify Fritillaria cirrhosa and the alkaloid content.

• Dry or lingering cough
• Bronchitis (acute and chronic)
• Asthma and wheezing
• Chronic obstructive pulmonary disease (COPD) support
• Phlegm and mucus buildup
• Upper respiratory infections
• Throat irritation and hoarseness
• Lung dryness from illness or environment

• Worsening of chronic respiratory symptoms when used as a maintenance herb in TCM protocols

• Asian pear (Li) — Traditionally combined with Chuan Bei Mu to soothe dry coughs — pear is cooling and moistening, supporting the same lung-nourishing pathway. Often stewed together as a folk remedy across China.
• Honey — Honey has well-documented cough-soothing properties and pairs naturally with Chuan Bei Mu in traditional syrups. It also supports the mucous membrane of the throat and airways.
• Lily bulb (Bai He) — A TCM food-herb used alongside Fritillaria to nourish lung yin and reduce dry cough. Used in both soups and herbal formulas for respiratory dryness.
• White fungus (Tremella mushroom) — A traditional Chinese food used to moisturize the lungs and support the same anti-inflammatory, mucous-membrane-soothing pathway as Chuan Bei Mu.
• Ginger tea — Warm ginger supports airway circulation and has anti-inflammatory properties. In TCM, it is often paired with cooling herbs like Fritillaria to balance their effect and aid absorption.

• Nausea or stomach discomfort at high doses
• Slowed heart rate (bradycardia) with excessive intake
• Dizziness at very high doses
• Potential uterine stimulation — avoid in pregnancy without supervision
• Rare allergic reaction in sensitive individuals

• Recommended daily: 3–9 g of dried powder per day in decoction (TCM standard range); for standardized extracts, follow manufacturer guidance — typically 300–600 mg of extract equivalent. Lower end (3 g) for dry-type coughs; higher end used in clinical TCM formulas under supervision.
• Best time of day: Often taken in 2–3 divided doses throughout the day; traditionally taken after meals in decoction form.
• With or without food: Best taken with or shortly after food to reduce any chance of stomach irritation, especially with powder or extract forms.
• Time to effect: Acute cough: 2–5 days. Chronic respiratory conditions: 2–4 weeks of consistent use.
• How long to take it: For acute cough or illness, use for 1–2 weeks as needed. For chronic respiratory support, TCM practitioners typically prescribe 4–8 week courses, reassessing afterward. Not typically recommended as an indefinite daily supplement without practitioner oversight.