Home Ingredients Bee Bread (Fermented Bee Pollen, Perga)

Bee Bread (Fermented Bee Pollen, Perga)

Evidence Level
Preliminary
6 Clinical Trials
5 Documented Benefits
1/5 Evidence Score

Bee bread, also called perga or ambrosia, is bee pollen that worker bees pack into honeycomb cells together with honey and their own secretions and seal under a thin layer of wax. Inside the cell the pollen goes through a lactic acid fermentation driven by bacteria and yeasts, which changes its makeup. Lab analyses report protein, sugars, fats including unsaturated fatty acids, minerals and polyphenols, with large differences depending on the flowers and region. Human research is very thin: two 12-person crossover trials in athletes from one research group, published outside PubMed, and two Russian-language studies whose abstracts give no dose. Most other findings come from rats and test tubes. Bee bread carries the same plant allergens as bee pollen, so people with a pollen or bee-product allergy should avoid it. It is covered separately from bee pollen.

Studied Dose 20 g/day for 8 weeks in a 12-man crossover trial; 30 g per hour during a 4-hour recovery period in a 12-athlete crossover trial. Rat studies used 0.5 g/kg. No human dose has been established.
Active Compound Fermented bee-collected pollen: protein and amino acids, sugars, fats including unsaturated fatty acids, minerals such as iron, organic acids, and polyphenols such as quercetin, kaempferol and isorhamnetin. Composition varies with the plant source.

Benefits

Protein, sugars, fats and minerals from fermented pollen

In an analysis of 8 monofloral bee bread samples, protein ranged from 14.8 to 24.3%, fat from 5.9 to 11.5% and moisture from 11.4 to 15.9%. Another analysis found 22.57 g protein and 26.78 g sugars per 100 g, and more iron per 100 g than bee pollen. These describe the food itself, not a measured effect in people.

Supported by Trial 4, Trial 5

Lactic fermentation in the comb and protein digestibility

Bees seal pollen in comb cells, where lactic acid bacteria such as Lactobacillus kunkeei and yeasts ferment it. In a lab model of digestion, bee bread protein was about 76% digestible versus 69% for bee pollen, and its polyphenols were more bioaccessible. These are lab results; digestion has not been measured in people.

Supported by Trial 4, Trial 5

Endurance running in two small crossover trials

In 12 male recreational athletes, 20 g a day for 8 weeks raised 20-minute time trial distance to 3.41 km versus 3.28 km on placebo, with higher total antioxidant status. In a second 12-athlete trial, 30 g per hour during recovery gave 3.45 versus 3.24 km. Both came from one research group and are not indexed in PubMed.

Supported by Trial 1, Trial 2

Blood lipid readings in a diet study of bee products

In a Russian study of 157 adults with atherogenic dyslipidemia on a lipid-lowering diet, total cholesterol fell 15.7% and LDL cholesterol 20.5% in the bee bread group. The abstract gives no dose, duration or between-group test, and the authors tied lipid gains with honey and pollen in overweight patients to weight loss.

Supported by Trial 3

Inflammatory and oxidative markers in rat studies

In rats on a high-fat diet, bee bread at 0.5 g/kg a day lowered leptin and markers of oxidative stress and improved sperm measures. In rats with implanted cotton pellets, 500 mg/kg for 7 days shifted inflammatory cytokines in a favorable direction. These are animal findings only.

Supported by Trial 5

Mechanism of action

1

Lactic fermentation of pollen in the sealed comb cell

Lactic acid bacteria and yeasts ferment the packed pollen in the sealed cell. Reviews describe this as making the pollen more digestible, and a lab digestion model found higher protein digestibility than raw pollen. An allergy review proposes that the same process may break down some allergenic proteins, but this is not proven to make it safe for allergic people.

2

Polyphenols with antioxidant activity in lab tests

Bee bread contains phenolic compounds such as quercetin, kaempferol and isorhamnetin, and its extracts show antioxidant, antibacterial and enzyme-inhibiting activity in test tube work. Whether usual servings change antioxidant status in people has been tested only in one 12-man trial and one Russian workplace study whose abstract gives no numbers.

3

Nrf2 and NF-κB signaling in obese rats

In obese rats, bee bread at 0.5 g/kg a day raised Nrf2/Keap1 expression, an antioxidant defense pathway, and lowered NF-κB-linked inflammatory proteins, alongside changes in the aortic wall. These are animal findings and have not been measured in people.

Clinical trials

1
Bee Bread 20 g/day and Endurance Running: 12-Man Crossover RCT (not PubMed-indexed)
PubMed

Randomized, double-blind, placebo-controlled crossover trial: 20 g of bee bread or placebo daily for 8 weeks each, with a 4-week washout, followed by 90 minutes of running at 60% VO2max and a 20-minute time trial. (Ping et al. 2018, Int J Appl Res Nat Prod)

12 male recreational athletes.

Time trial distance was greater after bee bread (3.41 vs 3.28 km), with higher plasma free fatty acids and higher total antioxidant status after supplementation and after exercise. Heart rate, oxygen uptake, body temperature, perceived exertion and plasma glucose did not differ. A very small trial from one research group, read from the repository abstract.

2
Bee Bread During Recovery and Time Trial Running: 12-Athlete Crossover (not PubMed-indexed)
PubMed

Randomized crossover study: after 90 minutes of treadmill running, athletes rested 4 hours and took bee bread or placebo at 30 g per hour, then ran a 20-minute time trial. (Chen et al. 2018, Int J Pharma Bio Sci)

12 athletes.

Distance covered was greater in the bee bread trial (3.45 vs 3.24 km), and plasma glucose was higher during recovery. Heart rate, oxygen uptake, body temperature and plasma volume did not differ. The abstract does not describe the placebo or blinding, and 30 g per hour supplies carbohydrate, so the result may reflect extra energy intake.

3
Honey, Pollen and Bee Bread with a Lipid-Lowering Diet: 157-Patient Russian Study
PubMed

Clinical study comparing a lipid-lowering diet alone with diet plus honey or pollen, bee bread, or honey plus pollen; Russian-language paper with an English abstract. (Kas'ianenko et al. 2011, Ter Arkh)

157 patients (64 men, 93 women) aged 39 to 72 with atherogenic dyslipidemia; products were given only to people without allergy or intolerance to them.

Total cholesterol fell 15.7% and LDL cholesterol 20.5% in the bee bread group, versus 18.3% and 23.9% with honey plus pollen. The abstract gives no dose, duration, randomization or between-group statistics, and the authors tied lipid improvement with honey and pollen in overweight and obese patients to weight loss.

4
Bee Bread and Oxidative Markers in Heavy Industry Workers (abstract gives no numbers)
PubMed

Russian-language study of bee bread in industrial workers; the English abstract is one sentence. (Omel'chuk et al. 2014, Med Tr Prom Ekol)

Heavy industry workers; the abstract does not give the number of participants.

The authors report that bee bread normalized lipid peroxidation and antioxidant markers and improved physical and psycho-emotional state. The abstract gives no participant number, dose, duration, control group or measured values, so the size and reliability of these effects cannot be judged.

5
Bee Bread in Male Rats on a High-Fat Diet (animal study)
PubMed

Controlled rat study: normal diet, high-fat diet, high-fat diet plus bee bread 0.5 g/kg a day by mouth, or high-fat diet plus orlistat, for 12 weeks. (Suleiman et al. 2021, Am J Physiol Endocrinol Metab)

32 male Sprague-Dawley rats, 8 per group. No human participants.

Bee bread lowered leptin, raised adiponectin, improved sperm measures, reduced sperm DNA fragmentation and epididymal oxidative stress, and raised testicular steroid-making gene expression compared with the high-fat diet alone. These are rat findings and do not show an effect in people.

6
Six Bee Products in a Rat Model of Chronic Inflammation (animal study)
PubMed

Experimental rat study comparing honey, propolis, pollen, royal jelly and bee bread, each at 500 mg/kg a day by mouth for 7 days, in cotton pellet granuloma. (Kosedag et al. 2023, Inflammopharmacology)

48 female Sprague-Dawley rats across healthy, control and bee product groups. No human participants.

All bee products showed anti-inflammatory activity. Bee bread was among the products that most raised IL-4, IL-10 and IL-1RA and lowered IL-6, TNF-α and IL-1β, ranking second after pollen. A short rat model; no human data.

Side effects and drug interactions

Common Potential side effects

Allergy: bee bread contains essentially the same plant allergens as bee pollen. A 2025 review found no reports of severe reactions to bee bread and described reactions as rare and mainly mild digestive or skin symptoms, but noted that fermentation does not guarantee safety for highly sensitive people and advised avoiding it if a pollen allergy is confirmed.
Bee pollen, its raw material, has caused anaphylaxis, so anyone with a pollen or bee-product allergy, asthma, or a history of severe allergic reactions should not take bee bread. Get emergency help for swelling, wheezing, faintness or trouble breathing.
Plant toxins can carry over from the pollen: bee bread made where bees forage on Echium plants contained pyrrolizidine alkaloids (up to 2,538 ng/g in one sample), and storage at 30 °C for 5 to 6 months removed only about a third of them, with no significant loss at 15 °C.
Hive products can contain toxic trace elements; a 2023 review concluded that lead can be present in hive products above 1,000 µg/kg, depending on region and beekeeping practice. Choose products with third-party contaminant testing.
Bee bread contains sugars (about 27 g per 100 g in one analysis), so 20 g supplies roughly 5 g of sugars.

Important Drug interactions

No drug interaction studies of bee bread were found.
Warfarin: bee pollen, the raw material of bee bread, was linked to an INR of 7.1 in a 71-year-old man on stable warfarin in a published case report rated a probable interaction. If you take warfarin, tell your anticoagulation clinic before starting bee bread and have your INR checked.
If you take prescription medicines, check with a pharmacist before using bee bread, since its effects on drug processing have not been tested.

Explore Other Ingredients

Cognitive
Ashwagandha
Ashwagandha (Withania somnifera) is an herb from Ayurvedic tradition whose root extracts a…
Cognitive
Rhodiola Rosea
Rhodiola rosea is an adaptogenic herb traditionally used in cold northern regions to comba…
Cognitive
Holy Basil (Tulsi)
Holy basil (tulsi) is a revered adaptogenic herb in Ayurvedic tradition, used to help the…

Frequently asked questions about Bee Bread (Fermented Bee Pollen, Perga)

What is bee bread, and how is it different from bee pollen?

Bee pollen is the pollen pellets bees carry back to the hive. Bee bread is that pollen after bees pack it into comb cells with honey and their secretions, seal it under wax and let it ferment with lactic acid bacteria and yeasts. Lab studies find its protein and polyphenols are more accessible in simulated digestion than those of raw pollen, but no human study has compared the two.

Is there human research on bee bread?

Very little. Two 12-person crossover trials in athletes from one Malaysian research group, published outside PubMed, reported slightly longer time trial distances with 20 g a day for 8 weeks or 30 g an hour during recovery. Two Russian-language studies reported lipid and antioxidant marker changes, but their abstracts give no dose. Most other findings come from rats and lab tests.

How much bee bread do people take?

The human trials used 20 g a day for 8 weeks, or 30 g an hour during a single 4-hour recovery period. No dose has been established for any health purpose. If you have never eaten bee products, start with a very small amount and stop at any sign of an allergic reaction. If you have a pollen or bee-product allergy, do not take it at all.

Who should avoid bee bread?

People with a pollen or bee-product allergy should not take it. Bee bread carries essentially the same plant allergens as bee pollen, and bee pollen has caused anaphylaxis. Fermentation may break down some allergens, and no severe reactions to bee bread had been reported in a 2025 review, but that review advised avoiding it when a pollen allergy is confirmed. Get emergency help for swelling, wheezing, faintness or trouble breathing.

What is Bee Bread?

Bee bread, also called perga or ambrosia, is bee pollen that worker bees pack into honeycomb cells together with honey and their own secretions and seal under a thin layer of wax. Inside the cell the pollen goes through a lactic acid fermentation driven by bacteria and yeasts, which changes its makeup.

What is Bee Bread used for?

Bee Bread has several researched uses. In an analysis of 8 monofloral bee bread samples, protein ranged from 14.8 to 24.3%, fat from 5.9 to 11.5% and moisture from 11.4 to 15.9%. Another analysis found 22.57 g protein and 26.

What is the recommended dosage of Bee Bread?

The clinically studied dose is 20 g/day for 8 weeks in a 12-man crossover trial; 30 g per hour during a 4-hour recovery period in a 12-athlete crossover trial. Rat studies used 0.5 g/kg. No human dose has been established. Always follow the product label and check with a healthcare provider for personal advice.

Is Bee Bread safe, and does it have side effects?

Side effects and cautions reported for Bee Bread include: Allergy: bee bread contains essentially the same plant allergens as bee pollen. A 2025 review found no reports of severe reactions to bee bread and described reactions as rare and mainly mild digestive or skin symptoms, but noted that fermentation does not guarantee safety for hi… It may also interact with some medications. Bee Bread is not right for everyone, so check with a healthcare provider first if you are pregnant or breastfeeding, have a medical condition, or take prescription medication.

Does Bee Bread interact with any medications?

Possible interactions include: No drug interaction studies of bee bread were found. Warfarin: bee pollen, the raw material of bee bread, was linked to an INR of 7.1 in a 71-year-old man on stable warfarin in a published case report rated a probable interaction. If you take prescription medication, check with a pharmacist or doctor before using it.

How strong is the scientific evidence for Bee Bread?

NutraSmarts rates the evidence for Bee Bread as Preliminary (1 out of 5). It is backed by 6 clinical trials and 16 cited references summarized on this page. A higher rating reflects more, larger, and better-designed human studies.

References(16 citations)

Evidence ratings on NutraSmarts are based on the totality of human clinical research, with emphasis on randomized controlled trials, meta-analyses, and systematic reviews. The references below directly support claims made throughout this page.

  1. Ping FWC, Chen CK, Ooi FK, Mohamed M. Effects of bee bread supplementation on endurance running performance and total antioxidant status in recreational athletes. International Journal of Applied Research in Natural Products. 2018;11(1):17-23..SourceUsed to support: Not PubMed-indexed; read from the university repository abstract. Randomized, double-blind, placebo-controlled crossover trial in 12 male recreational athletes: 20 g of bee bread a day for 8 weeks increased 20-minute time trial distance (3.41 vs 3.28 km) and raised plasma free fatty acids and total antioxidant status versus placebo, with no differences in heart rate, oxygen uptake, temperature, perceived exertion or plasma glucose.
  2. Chen CK, Ping FWC, Ooi FK, Mohamed M. Effects of bee bread supplementation during recovery on time trial performance and selected physiological parameters. International Journal of Pharma and Bio Sciences. 2018;9(2):281-288. doi: 10.22376/ijpbs.2018.9.2.b281-288.SourceUsed to support: Not PubMed-indexed; read from the journal abstract. Randomized crossover study in 12 athletes: bee bread or placebo at 30 g per hour during a 4-hour recovery after 90 minutes of running increased later 20-minute time trial distance (3.45 vs 3.24 km) and raised plasma glucose during recovery. Heart rate, oxygen uptake, temperature and plasma volume did not differ.
  3. Kas'ianenko VI, Komisarenko IA, Dubtsova EA. [Correction of atherogenic dyslipidemia with honey, pollen and bee bread in patients with different body mass]. Ter Arkh. 2011;83(8):58-62..PubMedUsed to support: Russian-language study of 157 patients with atherogenic dyslipidemia on a lipid-lowering diet: total and LDL cholesterol fell 15.7% and 20.5% with bee bread and 18.3% and 23.9% with honey plus pollen. The English abstract gives no dose, duration or between-group statistics, and ties lipid improvement with honey and pollen in overweight and obese patients to weight loss.
  4. Omel'chuk NN, Tatarintseva RIa, Stasitite-Buniavichene DS, Zlatinskaia GR, Ulhov AA. [Correction of lipid peroxidation processes and antioxidant systems with help of natural biomodulator bee-bread in heavy industry workers]. Med Tr Prom Ekol. 2014;(10):39-43..PubMedUsed to support: Russian-language study in heavy industry workers whose one-sentence English abstract reports that bee bread normalized lipid peroxidation and antioxidant markers and improved physical and psycho-emotional state. No participant number, dose, duration, control group or values are given.
  5. Matuszewska-Mach E, Borysewicz P, Królak J, Juzwa-Sobieraj M, Matysiak J. Ensuring the Safe Use of Bee Products: A Review of Allergic Risks and Management. Int J Mol Sci. 2025;26(24):12074. doi: 10.3390/ijms262412074.PubMedUsed to support: Review of allergy to bee products. It states that bee bread carries essentially the same allergens as bee pollen, that lactic fermentation may break down some allergenic proteins without guaranteeing safety for highly sensitive people, that no severe reactions to bee bread had been reported, and that bee pollen has caused anaphylaxis. It advises avoidance when a pollen allergy is confirmed.
  6. Bakour M, Laaroussi H, Ousaaid D, El Ghouizi A, Es-Safi I, Mechchate H, Lyoussi B. Bee Bread as a Promising Source of Bioactive Molecules and Functional Properties: An Up-To-Date Review. Antibiotics (Basel). 2022;11(2):203. doi: 10.3390/antibiotics11020203.PubMedUsed to support: Review describing how bees pack pollen with honey and secretions into sealed cells where anaerobic lactic fermentation produces bee bread, listing more than 300 identified compounds, and summarizing antioxidant, antimicrobial and enzyme-inhibiting activity in lab work and metabolic effects in animals. A review that collects other studies; it does not itself show an effect in people.
  7. Kaplan M, Karaoglu Ö, Eroglu N, Silici S. Fatty Acid and Proximate Composition of Bee Bread. Food Technol Biotechnol. 2016;54(4):497-504. doi: 10.17113/ftb.54.04.16.4635.PubMedUsed to support: Analysis of 8 monofloral bee bread samples: moisture 11.4 to 15.9%, ash 1.9 to 2.54%, fat 5.9 to 11.5% and protein 14.8 to 24.3%, with 37 fatty acids identified and an unsaturated to saturated ratio of 1.38 to 2.39. A food composition study.
  8. Darwish AMG, Abd El-Wahed AA, Shehata MG, El-Seedi HR, Masry SHD, Khalifa SAM, Mahfouz HM, El-Sohaimy SA. Chemical Profiling and Nutritional Evaluation of Bee Pollen, Bee Bread, and Royal Jelly and Their Role in Functional Fermented Dairy Products. Molecules. 2022;28(1):227. doi: 10.3390/molecules28010227.PubMedUsed to support: Compositional comparison of bee pollen, bee bread and royal jelly: bee bread had the highest protein (22.57 g/100 g) and sugars (26.78 g/100 g) and supplied more iron per 100 g than bee pollen, while bee pollen had the highest phenolic and flavonoid contents. A lab analysis.
  9. Aylanc V, Falcão SI, Vilas-Boas M. Bee pollen and bee bread nutritional potential: Chemical composition and macronutrient digestibility under in vitro gastrointestinal system. Food Chem. 2023;413:135597. doi: 10.1016/j.foodchem.2023.135597.PubMedUsed to support: In a simulated gastrointestinal digestion model, protein digestibility averaged 76% for bee bread and 69% for bee pollen, and the authors concluded bee bread protein is more accessible in the intestinal lumen. A lab model, not a human study.
  10. Degirmenci A, Yildiz O, Boyraci GM, Er Kemal M, Simsek O. The process of pollen transformation into bee bread: changes in bioactivity, bioaccessibility, and microbial dynamics. Food Funct. 2024;15(5):2550-2562. doi: 10.1039/d3fo04466a.PubMedUsed to support: Followed pollen and bee bread from the same apiary over time: polyphenols were more bioaccessible from bee bread than from pollen in an in vitro digestion model, and the lactic acid bacteria and yeasts identified were mostly Lactobacillus kunkeei, Leuconostoc pseudomesenteroides and Candida magnoliae. Lab work.
  11. Kast C, Kilchenmann V, Reinhard H, Bieri K, Zoller O. Pyrrolizidine Alkaloids: The Botanical Origin of Pollen Collected during the Flowering Period of Echium vulgare and the Stability of Pyrrolizidine Alkaloids in Bee Bread. Molecules. 2019;24(12):2214. doi: 10.3390/molecules24122214.PubMedUsed to support: Bee bread samples collected during Echium vulgare flowering contained pyrrolizidine alkaloids at 2,538 and 98 ng/g. Over 5 to 6 months of storage there was no significant reduction at 15 °C and overall reductions of 39% and 33% at 30 °C. Shows plant toxins can carry into bee bread.
  12. Végh R, Csóka M, Mednyánszky Z, Sipos L. Potentially toxic trace elements in bee bread, propolis, beeswax and royal jelly - A review of the literature and dietary risk assessment. Chemosphere. 2023;339:139571. doi: 10.1016/j.chemosphere.2023.139571.PubMedUsed to support: Literature review and dietary risk assessment of trace elements in bee bread, propolis, beeswax and royal jelly. Reported concentrations varied widely with soil, climate, flora and beekeeping practice, and the authors concluded that lead can be present in hive products above 1,000 µg/kg, a food safety concern for long-term consumers. The abstract does not break lead levels down by product.
  13. Suleiman JB, Abu Bakar AB, Noor MM, Nna VU, Othman ZA, Zakaria Z, Eleazu CO, Mohamed M. Bee bread mitigates downregulation of steroidogenic genes, decreased spermatogenesis, and epididymal oxidative stress in male rats fed with high-fat diet. Am J Physiol Endocrinol Metab. 2021;321(3):E351-E366. doi: 10.1152/ajpendo.00093.2021.PubMedUsed to support: Rat study (32 male rats, 12 weeks): in rats fed a high-fat diet, bee bread at 0.5 g/kg a day lowered leptin, raised adiponectin, improved sperm measures, reduced sperm DNA fragmentation and epididymal oxidative stress, and raised steroidogenic gene expression. Animal findings only.
  14. Kosedag M, Gulaboglu M. Pollen and bee bread expressed highest anti-inflammatory activities among bee products in chronic inflammation: an experimental study with cotton pellet granuloma in rats. Inflammopharmacology. 2023;31(4):1967-1975. doi: 10.1007/s10787-023-01182-4.PubMedUsed to support: Rat model of chronic inflammation (48 female rats): honey, propolis, pollen, royal jelly and bee bread at 500 mg/kg a day for 7 days all showed anti-inflammatory activity, with pollen first and bee bread second in raising anti-inflammatory and lowering pro-inflammatory cytokines. Animal findings only.
  15. Othman ZA, Zakaria Z, Suleiman JB, Che Jalil NA, Wan Ghazali WS, Mohamed M. Bee bread attenuates the progression of atherosclerosis by activating Nrf2/Keap1 and modulating TNF-α/NF-κβ-associated mast cell migration and a mitochondrial-dependent apoptotic pathway in the obese rat model. Food Funct. 2022;13(15):8119-8130. doi: 10.1039/d2fo00949h.PubMedUsed to support: Study in 40 male rats made obese on a high-fat diet: 6 weeks of bee bread at 0.5 g/kg a day enhanced Nrf2/Keap1 expression and reduced NF-κB downstream protein expression, with changes in mast cells and collagen in the aortic wall. Animal findings only.
  16. Hurren KM, Lewis CL. Probable interaction between warfarin and bee pollen. Am J Health Syst Pharm. 2010;67(23):2034-7. doi: 10.2146/ajhp090489.PubMedUsed to support: Case report about bee pollen, the raw material of bee bread: a 71-year-old man on stable warfarin reached an INR of 7.1 about a month after starting one teaspoon of bee pollen granules twice daily; the interaction was rated probable. A single case; no study has tested bee bread itself with warfarin.