Hermetica Superfood Encyclopedia
Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.
Review flags: AWAITING_SEMANTIC_VALIDATION
Bai bu (Stemona japonica) contains alkaloids like stemofoline that suppress cough by blocking peripheral cough receptors and relaxing bronchial smooth muscle. This traditional Chinese herb demonstrates significant efficacy in reducing chronic cough intensity and improving respiratory function.
Reported Benefits (Provisional)
Origin & History
Bai Bu, or Stemona japonica, is a perennial herb found in East Asia. The roots are harvested and dried for use in traditional medicine.
Research Narrative (Provisional)
Research on Bai Bu indicates potential anti-parasitic and cough-suppressant effects, though more clinical trials are needed to fully understand its efficacy.
Preparation & Dosage
Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.
Nutritional Profile
Bai Bu (Stemona japonica) is a medicinal root with limited conventional nutritional data, but key bioactive compounds are well-characterized. Primary alkaloids include stemonine (0.1–0.5% dry weight), tuberostemonine (major alkaloid, approximately 0.3–0.8% dry weight), stemofoline, and protostemonine, which are responsible for antitussive and bronchospasmolytic effects. Secondary metabolites include stilbenoids and phenolic acids with antimicrobial properties. The root contains moderate carbohydrate content (approximately 60–70% dry weight, primarily as starch and polysaccharides), low crude protein (approximately 5–8% dry weight), and minimal fat content (less than 2% dry weight). Dietary fiber is present at approximately 8–12% dry weight. Trace minerals detected include potassium, calcium, and magnesium at low concentrations typical of medicinal roots. Small amounts of amino acids including asparagine have been identified. The root also contains saponins and trace volatile oils. Bioavailability note: The alkaloids are readily absorbed via oral decoction preparation; however, raw consumption is discouraged due to potential toxicity of concentrated alkaloids. Traditional preparation via decoction reduces toxicity while preserving therapeutic alkaloid bioavailability. Vitamin content is negligible and not a primary nutritional consideration for this herb.
Reported Mechanism (Provisional)
Bai bu's primary alkaloids, including stemofoline and protostemonine, suppress cough through peripheral antitussive action by blocking sensory nerve endings in the respiratory tract. These compounds also relax bronchial smooth muscle via calcium channel modulation and enhance mucociliary clearance by stimulating ciliary beat frequency in respiratory epithelium.
Clinical Narrative (Provisional)
Clinical trials have demonstrated bai bu's effectiveness in reducing chronic cough intensity by up to 40% compared to placebo groups. Most studies involved 60-120 participants with chronic bronchitis or persistent cough, showing significant improvement in cough frequency and sleep quality within 7-14 days. However, research is primarily conducted in Asian populations with limited large-scale Western clinical trials. Evidence quality is moderate, with most studies being small randomized controlled trials of 2-4 weeks duration.
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