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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider before using herbs, especially if you are pregnant, nursing, taking medications, or have a medical condition.
Propolis works through several mechanisms, primarily involving its flavonoid content like pinocembrin and galangin, as well as CAPE (caffeic acid phenethyl ester). These compounds disrupt microbial cell membranes, inhibiting bacterial and fungal growth. Additionally, propolis modulates the immune response by reducing pro-inflammatory cytokines and enhancing macrophage activity. Evidence (Level C) suggests this dual action provides broad-spectrum antimicrobial effects, making it useful for wound healing and oral infections.
Can I take propolis if I am on blood thinners like warfarin?
Patients taking anticoagulants such as warfarin should exercise caution with propolis. Some studies suggest propolis may inhibit platelet aggregation, potentially increasing the risk of bleeding when combined with anticoagulant or antiplatelet medications. While clinical interaction data is limited (Evidence Level C), it is recommended to consult a physician before adding propolis to a regimen involving blood thinners to avoid adverse hematological events.
What is the standard adult dosage for propolis?
The standard adult dosage for internal immune support is typically 500mg of propolis extract or 15-30 drops of liquid tincture taken two to three times daily. For topical applications on minor wounds, creams containing 3-10% propolis are commonly used. Dosage may vary based on product concentration and standardization, so users should follow specific manufacturer instructions or consult a medical herbalist.
Is propolis safe to use during pregnancy?
Propolis is considered unsafe during pregnancy. Due to its immunomodulatory properties and potential to stimulate uterine contractions, medical herbalists advise against its use in pregnant women. Furthermore, the safety of propolis constituents for fetal development has not been established. Women who are pregnant or breastfeeding should avoid propolis supplements unless specifically prescribed by a qualified healthcare provider.
Can propolis cause allergic reactions?
Yes, allergic reactions are the most common side effect of propolis. Individuals with known allergies to bees, honey, pollen, or conifer poplars are at high risk of contact dermatitis or oral mucosal irritation. In rare cases, severe anaphylaxis can occur. Asthma patients sensitive to bee products should avoid propolis. A patch test is recommended before using topical products to rule out hypersensitivity.
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 30 PubMed articles · model: gemma4:31b
Summary
Propolis, also known as 'bee glue,' is a resinous substance produced by honeybees (Apis mellifera) from plant exudates and bee secretions, possessing broad antimicrobial, anti-inflammatory, and therapeutic properties [PMID:34444754, PMID:36079680, PMID:33100868].
Background
Propolis is a sticky, resinous waxy substance produced by honeybees (Apis mellifera) by mixing exudates collected from botanical sources—such as tree buds, sap flows, leaves, branches, and barks—with their own saliva and beeswax [PMID:36079680, PMID:34444754]. It is used by bees as a building material to seal cracks and crevices in the hive and as a defensive substance to protect the colony against pathogens [PMID:30053651, PMID:36161253, PMID:31762646]. Its composition is highly complex and varies based on geographical region, botanical sources, climate, and harvesting season [PMID:36079680, PMID:36028892, PMID:34444688].
Traditional uses
Propolis has been used for centuries in traditional and folk medicine globally for treating purulent disorders, improving wound healing, and alleviating related discomforts [PMID:36028892, PMID:37570811, PMID:35754701].
Active compounds
Propolis contains over 300 identified compounds, including resins, volatiles, waxes, polyphenols, polysaccharides, and secondary metabolites [PMID:33100868, PMID:31762646]. Key chemical classes include phenolic acids, flavonoids, terpenoids, benzofurans, benzopyrene, and chalcones [PMID:36830794, PMID:27574655]. Specific active compounds mentioned include caffeic acid phenethyl ester (CAPE), artepillin C, and chrysin [PMID:35754701].
Mechanism of action
Propolis affects numerous signaling pathways regulating cellular processes [PMID:34444754]. In cancer cells, it can inhibit proliferation, angiogenesis, and metastasis while stimulating apoptosis [PMID:34444754]. Against protozoans like Leishmania, it inhibits promastigote proliferation and produces anti-inflammatory effects by inhibiting nitric oxide (NO) production, while increasing macrophage activation and the production of TLR-2, TNF-α, IL-4, and IL-17, and downregulating IL-12 [PMID:32691360]. It may also act synergistically with conventional antibiotics, antifungals, and antivirus drugs [PMID:35889466].
Clinical evidence
Evidence CBacterial Infections
Propolis demonstrates a broad spectrum of antibacterial activity, showing greater efficacy against Gram-positive bacteria (e.g., Staphylococcus aureus) than Gram-negative bacteria [PMID:31146392, PMID:37372501, PMID:2182860].
Evidence CCancer
Propolis and its compounds can inhibit proliferation, angiogenesis, and metastasis of cancer cells and stimulate apoptosis [PMID:34444754].
Evidence CWound Healing
Propolis possesses antiseptic, antimicrobial, and regenerative properties, making it a promising component for wound dressings to treat burns and ulcers [PMID:38151671, PMID:27574655].
Evidence CMild Cognitive Impairment
Brazilian green propolis has been found to improve cognitive functions in patients with mild cognitive impairments living at high altitude via antioxidant properties [PMID:34444688].
Evidence CProtozoan Infections
Propolis inhibits parasitemia in Plasmodium and Trypanosoma and inhibits promastigote proliferation in Leishmania [PMID:32691360].
Evidence C
Safety & adverse effects
Propolis can cause allergic reactions, including dermatitis [PMID:6220861] and erythema multiforme [PMID:33757675]. Some patients sensitive to propolis also show sensitivity to balsam of Peru, cinnamyl cinnamate, vanillin, benzyl cinnamate, and clove oil [PMID:6220861].
Drug interactions
Propolis may act synergistically with antibiotics, antifungals, and antivirus drugs, potentially allowing for lower doses of these medications to achieve higher antimicrobial effects [PMID:35889466].
Evidence summary
The majority of the provided evidence consists of reviews (Level C) and in vitro/animal studies (Level D), indicating a strong theoretical and experimental basis for its biological activities, but a lack of extensive clinical research on human effects [PMID:20970490].
No direct government monograph is available for this herb. The content below is AI-generated and has not been verified against an authoritative government source. Use the search links to check official sources before relying on this information.
15.PMID: 19554760 (2009) — Effects of stingless bee and honey bee propolis on four species of bacteria. · Genetics and molecular research : GMR
16.PMID: 31762646 (2019) — Composition and functional properties of propolis (bee glue): A review. · Saudi journal of biological sciences
17.PMID: 38048032 (2024) — First Proteome Analysis of Poplar-Type Propolis. · Plant foods for human nutrition (Dordrecht, Netherlands)
18.PMID: 38151671 (2023) — Applications of propolis-based materials in wound healing. · Archives of dermatological research
19.PMID: 34444688 (2021) — Experimental Evidence for Therapeutic Potentials of Propolis. · Nutrients
20.PMID: 33801571 (2021) — The Scent of Antifungal Propolis. · Sensors (Basel, Switzerland)
21.PMID: 35754488 (2022) — The Suitability of Propolis as a Bioactive Component of Biomaterials. · Frontiers in pharmacology
22.PMID: 35889466 (2022) — Perspectives for Uses of Propolis in Therapy against Infectious Diseases. · Molecules (Basel, Switzerland)
23.PMID: 36959133 (2023) — Propolis: Antineoplastic Activity, Constituents, and Mechanisms of Action. · Current topics in medicinal chemistry
24.PMID: 20970490 (2011) — Propolis: is there a potential for the development of new drugs? · Journal of ethnopharmacology
25.PMID: 33593461 (2021) — The effects of crude propolis, its volatiles and ethanolic extracts on the ecto-parasitic mite, Varroa destructor and health of the African savannah honey bee, Apis mellifera scutellata. · Parasitology
26.PMID: 34611369 (2021) — How diverse is the chemistry and plant origin of Brazilian propolis? · Apidologie
27.PMID: 27574655 (2015) — Propolis: a new frontier for wound healing? · Burns & trauma
28.PMID: 36830794 (2023) — Propolis and Their Active Constituents for Chronic Diseases. · Biomedicines
29.PMID: 42243173 (2026) — Caucasian and Egyptian chitosan/propolis nanocomposites inhibit deformed wing virus in Apis mellifera L. cell lines. · Scientific reports
30.PMID: 35754701 (2022) — An Insight into Anticancer Effect of Propolis and Its Constituents: A Review of Molecular Mechanisms. · Evidence-based complementary and alternative medicine : eCAM