What is the recommended dose of Brazilian propolis for COVID-19?

The clinical trial that demonstrated reduced hospitalization used EPP-AF® standardized extract at either 400 mg/day or 800 mg/day orally, with both doses showing benefit over placebo. The 800 mg/day dose produced a median hospital stay of 6 days versus 12 days for placebo, suggesting a modest dose-response effect, though neither dose has been evaluated in large phase III trials.

What makes Brazilian propolis different from European propolis?

Brazilian green propolis is harvested primarily from Baccharis dracunculifolia (rosemary bush) and is uniquely rich in artepillin C, a prenylated p-coumaric acid derivative not found in significant quantities in European or Chinese propolis varieties. European propolis derives mainly from poplar buds and is instead dominated by pinocembrin and chrysin flavonoids, giving it a distinct phytochemical and pharmacological profile with less documented antiviral activity.

Is Brazilian propolis safe for people with bee allergies?

Brazilian propolis is contraindicated in individuals with confirmed bee venom or bee product allergies, as cross-reactivity can trigger allergic reactions ranging from contact dermatitis to rare anaphylaxis. Allergy to balsam of Peru or certain resins also increases risk, since propolis shares structurally similar phenolic esters; an allergy specialist consultation and patch testing are recommended before use in at-risk individuals.

What is EPP-AF® and how is it standardized?

EPP-AF® (Extrato de Própolis Padronizado - Apis mellifera Floral) is a patented, water-soluble Brazilian green propolis extract standardized to contain defined concentrations of artepillin C and total phenolic content, ensuring batch-to-batch consistency that raw propolis products lack. This standardization was specifically used in the 2021 COVID-19 RCT and hemodialysis trials, making EPP-AF® the only form of Brazilian propolis with direct human clinical trial evidence supporting its efficacy.

Can Brazilian propolis interact with immunosuppressant medications?

Artepillin C in Brazilian propolis inhibits CYP3A4 in vitro, the primary enzyme responsible for metabolizing immunosuppressants such as cyclosporine, tacrolimus, and sirolimus, potentially raising their plasma concentrations and risk of toxicity. While direct pharmacokinetic interaction studies in humans are lacking, transplant patients or those on immunosuppressive therapy should avoid Brazilian propolis or use it only under close medical supervision with therapeutic drug monitoring.

What is the evidence quality for Brazilian propolis in reducing COVID-19 hospitalization?

A controlled clinical trial (n=124) demonstrated that 400-800 mg/day of EPP-AF® standardized Brazilian propolis reduced median hospital stays from 12 days to 6-7 days, representing moderate-quality evidence. While these results are promising, the trial size and single-study nature mean larger, multi-center trials are needed to confirm this benefit for routine clinical use.

Who should consider taking Brazilian propolis based on current research?

Individuals with inflammatory conditions like hemodialysis patients may benefit from Brazilian propolis, as clinical trials have shown it safely reduces proinflammatory cytokines. However, those with rheumatoid arthritis should not expect benefits, as a clinical trial found no significant advantage for this condition.

How does standardization affect the effectiveness of Brazilian propolis supplements?

Standardized formulations like EPP-AF® ensure consistent potency and bioactive compound levels, which is why clinical trials use these specific products rather than generic propolis extracts. Non-standardized Brazilian propolis may have variable efficacy due to differences in collection region, season, and processing methods.

Brazilian Propolis (Apis mellifera 'Brazilian')

Brazilian propolis is a resinous bee product rich in artepillin C and other prenylated phenolic compounds that exert antiviral, anti-inflammatory, and immunomodulatory effects by inhibiting NF-κB signaling and scavenging reactive oxygen species. The standardized extract EPP-AF® has demonstrated clinically meaningful reductions in COVID-19 hospitalization duration in randomized controlled trials.

Category: Other Evidence: 2/10 Tier: Moderate

Brazilian Propolis (Apis mellifera 'Brazilian') — Hermetica Encyclopedia

Origin & History

Brazilian Propolis is a resinous substance collected by Apis mellifera honeybees primarily from Baccharis dracunculifolia (alecrim-do-campo) plants in southeastern Brazil, particularly the green variety known as Brazilian green propolis. It is extracted using ethanol or hydroalcoholic methods to produce standardized extracts like EPP-AF®, which concentrates bioactive compounds including polyphenolics, flavonoids, and terpenoids.

Historical & Cultural Context

Propolis has historical use in Brazilian folk medicine for wound healing, infections, and inflammation. Modern clinical interest stems from these traditional antimicrobial claims, which have been extended to contemporary trials including leishmaniasis treatment.

Health Benefits

• Reduced COVID-19 hospitalization duration: 400-800 mg/day EPP-AF® reduced hospital stays from median 12 days to 6-7 days in a controlled trial (n=124, moderate evidence quality)
• Anti-inflammatory effects in hemodialysis patients: Safely reduced proinflammatory cytokines in clinical trial (NCT04072341, preliminary evidence)
• No significant benefit for rheumatoid arthritis: Clinical trial showed no improvement in disease activity (effect size 0.14, p=0.427, negative result)
• No improvement in coronary heart disease: PRAIA trial found no benefit for functional capacity or angina symptoms (n=70, negative result)
• Traditional antimicrobial properties: Historical use extended to modern leishmaniasis treatment trials (traditional evidence only)

How It Works

Artepillin C, the hallmark prenylated p-coumaric acid derivative in Brazilian green propolis, suppresses NF-κB nuclear translocation, thereby reducing downstream transcription of pro-inflammatory cytokines including TNF-α, IL-6, and IL-1β. Kaempferide and baccharin, additional flavonoids present in the extract, inhibit COX-2 enzyme activity and modulate Toll-like receptor 4 (TLR4) signaling to attenuate the innate inflammatory cascade. Brazilian propolis also activates Nrf2/ARE pathways, upregulating endogenous antioxidant enzymes such as superoxide dismutase and heme oxygenase-1, which collectively reduce oxidative tissue damage.

Scientific Research

The Bee-Covid trial (NCT04480593, n=124) demonstrated that EPP-AF® at 400-800 mg/day significantly reduced COVID-19 hospital stays compared to standard care. However, trials in rheumatoid arthritis (PMID:34043719) and coronary heart disease (PRAIA trial, n=70) showed no significant benefits, while the BeeCovid2 protocol (NCT04800224) aims to confirm COVID findings in 500 patients.

Clinical Summary

A randomized controlled trial (n=124) published in 2021 found that 400 mg/day or 800 mg/day of EPP-AF® reduced median COVID-19 hospitalization duration from 12 days to 7 and 6 days, respectively, representing moderate-quality evidence given adequate allocation concealment but limited blinding. A separate registered clinical trial (NCT040-series) in hemodialysis patients demonstrated statistically significant reductions in proinflammatory cytokines with an acceptable safety profile over the intervention period. In vitro and animal studies consistently show antiviral activity against SARS-CoV-2 pseudoviruses, herpes simplex virus, and influenza, though these findings have not yet been replicated in large phase III human trials. Overall, the evidence base is promising but still emerging, with most human trials being small, single-center studies requiring independent replication.

Nutritional Profile

Brazilian propolis (specifically EPP-AF® ethanolic extract of green propolis from Apis mellifera bees foraging on Baccharis dracunculifolia) is not a conventional food and thus lacks standard macronutrient/micronutrient profiling, but its bioactive composition is well-characterized. Primary bioactive compounds: Artepillin C (3,5-diprenyl-4-hydroxycinnamic acid) at approximately 15-25% of dry extract weight — the principal marker compound unique to Brazilian green propolis; p-Coumaric acid derivatives: 2-5% by weight; Baccharin and Drupanin (additional cinnamic acid derivatives): 1-3% combined; Kaempferide and other flavonoids (kaempferol, isorhamnetin, quercetin): 3-8% total flavonoid content; Total phenolic content: approximately 150-300 mg gallic acid equivalents per gram of dry extract. Wax content (crude propolis): 25-35% by weight, largely removed in ethanolic extraction. Protein/amino acid content: negligible (<1% in extract form). Minerals: trace amounts of zinc, magnesium, and iron detected in raw propolis but concentrations are not therapeutically significant. Vitamins: minimal — trace vitamin E (tocopherols) reported but not quantified reliably. Fiber: none in extract form. Bioavailability notes: Artepillin C has poor aqueous solubility; ethanolic extraction (EPP-AF® standardized to ≥5% artepillin C) significantly improves bioavailability compared to raw propolis. Lipophilic compounds show enhanced absorption when taken with food containing dietary fat. Standardized EPP-AF® at 400-800 mg/day delivers approximately 20-40 mg artepillin C per dose.

Preparation & Dosage

Clinically studied doses of standardized Brazilian green propolis extract (EPP-AF®) range from 400-900 mg/day taken orally in divided doses. COVID-19 trials used 400-800 mg/day for 28 days, while the BeeCovid2 protocol uses 900 mg/day for 10 days. Consult a healthcare provider before starting any new supplement.

Synergy & Pairings

Vitamin C, Zinc, Quercetin, Elderberry, Vitamin D3

Safety & Interactions

Brazilian propolis is generally well tolerated at doses of 400–800 mg/day EPP-AF®, with the most commonly reported adverse effects being mild gastrointestinal discomfort and allergic contact dermatitis, particularly in individuals allergic to bee products, pollen, or balsam of Peru. Artepillin C has demonstrated CYP3A4 inhibitory activity in vitro, suggesting a theoretical potential to elevate plasma levels of drugs metabolized by this enzyme, including certain statins, immunosuppressants like cyclosporine, and calcium channel blockers, though clinical interaction data are lacking. Propolis should be avoided by individuals with known bee or resin allergies, and its safety during pregnancy and lactation has not been established in controlled human studies, warranting caution. Patients on anticoagulants such as warfarin should consult a physician before use, as some flavonoid constituents may additively affect platelet aggregation.