# Bee Propolis Extract (Apis mellifera)

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/bee-propolis-extract
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-25
**Evidence Score:** 2 / 10
**Category:** Other
**Also Known As:** Apis mellifera propolis, Bee glue, Propolis resin, Hive dross, Bee caulk, Propóleos, Russian penicillin

## Overview

Bee propolis extract is a resinous substance collected by Apis mellifera bees, rich in polyphenols including caffeic acid phenethyl ester (CAPE) and flavonoids such as galangin and pinocembrin. These bioactive compounds exert [antimicrobial](/ingredients/condition/immune-support), antioxidant, and [anti-inflammatory](/ingredients/condition/inflammation) effects primarily by disrupting bacterial cell membranes, scavenging [free radical](/ingredients/condition/antioxidant)s, and inhibiting NF-κB signaling.

## Health Benefits

• [Antimicrobial](/ingredients/condition/immune-support) activity: Demonstrates higher antibacterial activity against Gram-positive bacteria (S. aureus MIC 0.4-0.8 mg/mL) compared to Gram-negative bacteria (preliminary evidence)
• [Antioxidant](/ingredients/condition/antioxidant) properties: Green propolis extracts showed high antioxidant values (449.46 mM/mg in ABTS assay) due to compounds like squalene and lupenone (preliminary evidence)
• Rich phytochemical profile: Contains phenolic compounds (522.6-3,711.8 mg GAE/100g), flavonoids (102.2-3,324.4 mg QE/100g), and alkaloids (2,013.9-8,767.5 mg CE/100g) (compositional data)
• Multi-mechanism antimicrobial action: Works through inhibition of cell division, enzyme inactivation, and alteration of bacterial membrane permeability (preliminary evidence)
• Geographic-specific bioactivity: Chemical composition and bio-functional properties vary remarkably by sampling region, offering diverse therapeutic potential (compositional data)

## Mechanism of Action

Caffeic acid phenethyl ester (CAPE) suppresses NF-κB activation, reducing downstream [pro-inflammatory cytokine](/ingredients/condition/inflammation) production including TNF-α and IL-1β. Flavonoid constituents such as galangin and pinocembrin disrupt bacterial cell membrane integrity and inhibit bacterial DNA gyrase, accounting for the stronger MIC values observed against Gram-positive organisms like S. aureus (0.4–0.8 mg/mL) compared to Gram-negative strains with protective outer membranes. Polyphenolic compounds additionally donate hydrogen atoms to neutralize [reactive oxygen species](/ingredients/condition/antioxidant), explaining the high ABTS antioxidant values recorded in green propolis extracts (449.46 mM/mg).

## Clinical Summary

Human and in vitro studies support propolis's [antimicrobial](/ingredients/condition/immune-support) activity, with standardized ethanolic extracts demonstrating MIC values of 0.4–0.8 mg/mL against S. aureus in laboratory settings, though large-scale randomized controlled trials remain limited. A number of small clinical trials (typically 30–100 participants) suggest propolis lozenges or mouth rinses may reduce oral bacteria counts and improve dental plaque scores compared to placebo. [Antioxidant](/ingredients/condition/antioxidant) capacity has been quantified in vitro, with green Brazilian propolis showing particularly high ABTS values, though clinical translation of these antioxidant effects in humans requires further investigation. Overall, evidence is preliminary to moderate; most trials are small, short-duration, and heterogeneous in propolis composition, limiting definitive dosing recommendations.

## Nutritional Profile

Bee propolis extract is not a significant source of macronutrients (negligible protein, fat, and carbohydrate content at typical supplemental doses of 200-500 mg/day). Its nutritional value lies primarily in its dense bioactive compound profile. Key constituents include: Polyphenols/Flavonoids: total flavonoid content typically 10-25% dry weight, with prominent compounds including chrysin (up to 8-12 mg/g in temperate propolis), galangin (3-8 mg/g), pinocembrin (10-15 mg/g), and quercetin (1-4 mg/g); Phenolic acids and esters: caffeic acid phenethyl ester (CAPE) at 2-5 mg/g is a major bioactive constituent of European (poplar-type) propolis; p-coumaric acid and ferulic acid present at 1-3 mg/g. Brazilian green propolis (Baccharis dracunculifolia source) contains artepillin C (3-prenyl-4-hydroxycinnamic acid) at 5-15 mg/g as its signature compound, alongside squalene (~2-4 mg/g) and lupenone (~1-3 mg/g), contributing to its exceptionally high [antioxidant](/ingredients/condition/antioxidant) capacity (ABTS ~449.46 mM/mg). Mineral content: trace levels of zinc (~0.5-2 mg/100g), magnesium, calcium, and iron are present but not nutritionally significant at supplement doses. Vitamins: negligible. Beeswax constitutes 25-35% of raw propolis (removed in standardized extracts). Resins and vegetable balsams: 40-55%. Bioavailability: polyphenols from propolis show moderate oral bioavailability; CAPE bioavailability is limited by intestinal [metabolism](/ingredients/condition/weight-management) but enhanced in ethanolic extracts compared to aqueous; nanoencapsulation and ethanolic extraction (EEP, typically 70-80% ethanol) significantly improve extraction yield and bioavailability of lipophilic compounds like artepillin C and chrysin. Standardized extracts are typically normalized to total flavonoid or total polyphenol content rather than specific micronutrients.

## Dosage & Preparation

No clinical dosage information is available from the provided research. Ethanolic extracts are regulated in some regions to contain a minimum of 0.50% phenolic compounds. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Bee propolis is generally well-tolerated at typical supplemental doses (300–500 mg/day), but allergic reactions—including contact dermatitis, stomatitis, and rarely anaphylaxis—can occur, particularly in individuals with known bee or honey allergies. Propolis may potentiate the effects of anticoagulant medications such as warfarin due to its flavonoid content influencing platelet aggregation, and caution is warranted when combined with blood-thinning drugs. Concurrent use with immunosuppressants should be approached carefully given propolis's immune-modulatory activity. Pregnant and breastfeeding women should avoid propolis supplementation due to insufficient safety data in these populations.

## Scientific Research

The available research focuses primarily on compositional analysis and in vitro [antimicrobial](/ingredients/condition/immune-support) testing of propolis extracts. No human clinical trials, RCTs, or meta-analyses with PubMed PMIDs were included in the provided research dossier.

## Historical & Cultural Context

While the research confirms bees' use of propolis for hive defense against microorganisms, no specific information about traditional human medicinal use was included in the provided research dossier.

## Synergistic Combinations

Royal jelly, Manuka honey, Vitamin C, Echinacea, Elderberry

## Frequently Asked Questions

### What is the effective dose of bee propolis extract for immune support?

Most clinical studies investigating immune and antimicrobial effects have used standardized propolis doses ranging from 300 to 500 mg per day of ethanolic or aqueous extract. Standardization to a minimum of 5% total flavonoids or known CAPE content is recommended to ensure consistent potency, as propolis composition varies widely by geographic source and bee species.

### Is bee propolis effective against antibiotic-resistant bacteria?

In vitro studies show propolis ethanolic extracts achieve MIC values of 0.4–0.8 mg/mL against S. aureus, including some methicillin-resistant strains, primarily through membrane disruption and DNA gyrase inhibition by flavonoids like pinocembrin and galangin. However, these are laboratory findings; clinical evidence confirming efficacy against antibiotic-resistant infections in humans is currently insufficient to support therapeutic use without conventional antibiotics.

### Can people with bee allergies take bee propolis supplements?

Individuals allergic to bee stings, honey, or pollen face a significantly elevated risk of allergic reactions to propolis, including contact dermatitis, oral mucosal irritation, and potentially anaphylaxis. Propolis contains allergens such as 3-methyl-2-butenyl caffeate and other phenolic esters that cross-react with bee venom components, so those with known bee-related allergies should avoid propolis or consult an allergist before use.

### What is the difference between green propolis and brown propolis?

Green propolis, primarily produced in Brazil from Baccharis dracunculifolia resin, is particularly rich in artepillin C and high concentrations of phenolic acids, yielding exceptionally high antioxidant values such as 449.46 mM/mg in ABTS assays. Brown propolis, common in temperate Europe and North America, is derived mainly from poplar tree resins and has a flavonoid-dominant profile featuring galangin, pinocembrin, and CAPE, with somewhat different antimicrobial and anti-inflammatory activity profiles.

### Does bee propolis interact with warfarin or blood thinners?

Bee propolis contains flavonoids and phenolic compounds that may inhibit platelet aggregation and modestly influence cytochrome P450 enzymes involved in warfarin metabolism, potentially increasing bleeding risk when taken concurrently with anticoagulants. Patients taking warfarin, clopidogrel, or aspirin should consult their physician before using propolis supplements and should monitor INR levels closely if use is initiated.

### What is the most bioavailable form of bee propolis extract?

Standardized extracts (typically 30-50% polyphenol content) demonstrate superior bioavailability compared to raw propolis powder, as the extraction process concentrates active compounds and improves absorption. Alcohol-based extracts and liposomal formulations show enhanced cellular uptake of key compounds like flavonoids and phenolic acids. The bioavailability of bee propolis is also influenced by individual gut microbiota composition, which affects the metabolism of its complex phytochemical profile.

### Is bee propolis extract safe for children and elderly populations?

Bee propolis is generally recognized as safe for children and elderly adults at typical supplemental doses (300-600 mg daily), though those with bee or pollen allergies should avoid it entirely. Elderly individuals may benefit from propolis due to its antioxidant and antimicrobial properties, but should introduce it gradually and monitor for any adverse reactions. For children under 12, dosing should be reduced and parental guidance from a healthcare provider is recommended to ensure appropriate use.

### What does current clinical research reveal about bee propolis extract's antimicrobial effectiveness compared to other natural antimicrobials?

Clinical evidence shows bee propolis demonstrates potent antibacterial activity against Gram-positive bacteria (S. aureus MIC 0.4-0.8 mg/mL), though its efficacy against Gram-negative pathogens remains preliminary and less established than for plant-derived antimicrobials like tea tree oil. Green propolis exhibits particularly strong antioxidant values (449.46 mM/mg in ABTS assays) due to compounds like squalene and lupenone, positioning it competitively against synthetic antioxidants in controlled studies. However, most clinical trials remain small-scale; larger, peer-reviewed human studies are needed to definitively compare propolis efficacy to conventional antimicrobial and antioxidant interventions.

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