Lu Feng Fang
StarPolistes olivaceus (De Geer), Polistes japonicus Saussure, Parapolybia varia Fabricius
Traditionally used for
- Teeth & mouth
- Pain & joints
- Skin
Cautions & contraindications
- Kidney conditions
- Toxic — professional use only
☯ TCM Properties
Attacks Toxins and Kills Parasites; Dispels Wind and Stops Pain; Disperses Swelling and Dissipates Nodules; Relieves Itching; Tonifies Kidney Yang
Traditional Chinese Uses
Lu Feng Fang (wasp nest used internally/externally for skin) is a warm, slightly toxic substance used in Chinese medicine to expel Wind, stop pain, kill parasites, and reduce swelling. External applications address skin conditions including scabies, ringworm, inflammatory skin lesions, and the dental pain of wind-heat affecting the teeth and gums. Internally it is used for Wind-Bi joint pain and certain allergic conditions. Its toxicity requires short-term, controlled use.
Relationships
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Botanical Description
Lu Feng Fang is the dried paper nest of the social paper wasp Polistes mandarinus (family Vespidae) and several related Polistes species, which construct exposed, stalked nests attached to twigs, eaves, or rock faces across China, Korea, and Japan. The nest is built from chewed plant fibers mixed with wasp saliva, forming a single uncovered comb of hexagonal cells opening downward, supported by a short central petiole; nests range from 5 to 15 cm or more across and are pale gray to grayish-brown, light, brittle, and slightly fibrous in texture. Collected nests are typically gathered in autumn or winter after the colony has died, freed of any residual larvae and adult wasps, and gently sun-dried before being broken into coarse pieces for use.
Active Constituents
Flavonols (quercetin, kaempferol)
FlavonoidCarried into the nest with plant material, pollen and resins rather than made by the wasp. They account for part of the antioxidant and anti-inflammatory activity of nest extracts in vitro. Around forty-nine constituents have been reported from Nidus Vespae as a whole, and the profile inevitably reflects the local flora as much as the species of wasp.
Wasp-nest volatile oil
Volatile oil fractionThe fraction traditionally held responsible for the drug's toxicity and for the caution against internal use in the weak. It has not been resolved into individual well-characterised compounds in the accessible literature, so it should be treated as an uncharacterised irritant fraction rather than a defined constituent.
Nest matrix proteins and peptides of salivary origin
Protein and peptideThe comb is plant fibre bound with wasp oral secretion, so insect-derived proteins are structurally part of the drug. These are the plausible carriers of the allergic risk in Hymenoptera-sensitised patients, although the nest is not venom and the overlap between nest proteins and venom allergens has not been characterised for this species.
Inorganic nest minerals
Inorganic saltsElemental analysis of Nidus Vespae reports carbon, nitrogen, oxygen, sodium, calcium, potassium, magnesium, aluminium and silicon, with calcium salts prominent. Much of the weight of the crude drug is inert mineral and structural fibre.
⚠ Drug Interactions
Feng Fang (Nidus Vespae) supplied under any of its other names
Lu Feng Fang and Feng Fang are the same drug, Nidus Vespae, the paper-wasp comb; lu simply distinguishes the weathered comb collected in the open. This record is therefore not a separate substance from the Feng Fang record in this corpus, which is keyed to Polistes olivaceus (De Geer), Polistes japonicus Saussure and Parapolybia varia Fabricius, the three species named in the current Chinese Pharmacopoeia monograph. Polistes mandarinus de Saussure, 1853 is a valid and distinct East Asian paper wasp, not a synonym of P. olivaceus, and it is not one of the official source species; it appears in older and regional materia medica listings of the drug. So the two records differ in the source insect but describe the same crude drug, and the profile below is a species-level footnote on a drug whose real identity is the comb, not the wasp.
Clinical note: Treat Lu Feng Fang and Feng Fang as one item when totalling a prescription. If the source species matters for your purpose, note that commercial Nidus Vespae is essentially never identified to species and that almost all published pharmacology used unidentified commercial material.
Hymenoptera venom immunotherapy; patients with known wasp or bee sting anaphylaxis
The drug is an insect product bound together with wasp oral secretion, given internally as a decoction and topically as a wash or powder on broken and inflamed skin. Sensitisation to Hymenoptera proteins is common and clinically serious. No case report of anaphylaxis to Nidus Vespae was found in the accessible literature, so this is reasoning from the nature of the material rather than documented events, but the consequence if it is right is severe enough that it should be acted on.
Clinical note: Ask about wasp and bee sting reactions before prescribing, and avoid the herb in any patient with a history of systemic sting reaction or on venom immunotherapy.
Nephrotoxic drugs (aminoglycosides, NSAIDs, ciclosporin)
Nidus Vespae is classed as slightly toxic in Chinese practice and is traditionally restricted in the deficient and in those with impaired kidneys, the caution being attached to its volatile fraction. No modern renal toxicology of the drug was located, so this is a precautionary extension of the classical restriction rather than a documented pharmacological interaction.
Clinical note: Avoid internal use in significant renal impairment and in patients on other nephrotoxic agents; topical use is the lower-risk route.
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| decoction, or powder/pills | 3–5 g | Daily | — | — | 中国药典 2020 monograph 【蜂房】【用法与用量】3～5g。外用适量，研末油调敷患处，或煎水漱，或洗患处。 【性味与归经】甘，平。归胃经。 — Matched by hand: Polistes nest; 露蜂房 is the traditional full name of ChP 蜂房. Chinese Pharmacopoeia 2020, quoted verbatim. |
Evidence Tier
Moderate evidence · 3 studiesRecorded studies by study design, strongest design at the top. This is a study-design tier only, not a GRADE rating: it does not weigh risk of bias, consistency or precision.
Systematic review / meta-analysis
0
Randomized controlled trial
0
Other clinical trial
0
Observational / case report
0
In vitro / animal
3
1 verified · 2 unverified
Show 3 studies
- Effects of Nidus Vespae extract and chemical fractions on glucosyltransferases, adherence and biofilm formation of Streptococcus mutans
- Effects of compounds found in Nidus Vespae on the growth and cariogenic virulence factors of Streptococcus mutans
- Activity of Nidus Vespae extract and chemical fractions against Streptococcus mutans biofilms
Other / unclassified
0
Verified: design read from PubMed for a DOI that resolves to the cited paper Unverified: taken from the study's recorded description
Clinical Studies
Effects of Nidus Vespae extract and chemical fractions on glucosyltransferases, adherence and biofilm formation of Streptococcus mutans
Crude Nidus Vespae extract and its solvent fractions inhibited glucosyltransferase activity, adherence and biofilm formation by Streptococcus mutans, the chloroform/methanol fraction being the most active. This is the best-replicated laboratory activity of the drug and underlies its traditional dental use. The material was commercial Nidus Vespae and was not identified to Polistes mandarinus or to any other single species.
Effects of compounds found in Nidus Vespae on the growth and cariogenic virulence factors of Streptococcus mutans
Follow-up study testing individual compounds identified in Nidus Vespae against growth, acid production and other cariogenic virulence factors of S. mutans. As with the earlier work, the starting material was commercial nest and the findings cannot be attributed to a named wasp species.
Activity of Nidus Vespae extract and chemical fractions against Streptococcus mutans biofilms
Nest extract and its fractions were active against established S. mutans biofilms as well as against planktonic cells, supporting an anti-plaque rather than purely bacteriostatic action.
⚠ Safety & Contraindications
- Kidney conditions
- Toxic — professional use only
Contraindications
Its use is cautious in patients with qi deficiency or renal insufficiency.
Source: Xi S, Gong Y. Essentials of Chinese Materia Medica and Medical Formulas. Academic Press/Elsevier, 2017, pp. 402–408.
Historical Texts
Shen Nong Ben Cao Jing
Han dynastyBen Cao Gang Mu
Ming dynastyThis information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.
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