Bee Pollen
Summary
Bee pollen is flower pollen mixed with nectar and bee secretions. It contains protein, sugars, fats and polyphenols, but controlled human evidence is almost absent: one small crossover found no benefit over honey for menopausal symptoms (grade D). Case reports describe anaphylaxis, especially in people with pollen allergies, and a raised INR with warfarin.
Key facts
- Pollen granules combined with honeybee secretions and nectar, containing proteins, amino acids, lipids, carbohydrates, minerals, vitamins and polyphenols[7]
- One small crossover (46 women) found pollen-honey no better than honey for menopausal symptoms[1]
- INR rose to 7.1 in a man on stable warfarin a month after starting one teaspoon twice daily[2]
- Mycotoxins are frequently found in bee pollen, occasionally above safe intakes[9]
- 1 graded human outcome on this page
- October 13, 2026
How it works
ProposedLab and animal studies attribute antioxidant and anti-inflammatory activity to bee pollen's polyphenols and other compounds. No mechanism has been confirmed in human trials.[7]
What the human research says
Human trials only, one row per outcome. The form column shows what each trial actually tested. Grades follow our evidence-grading policy.
| Outcome | Effect | Grade | Best evidence | PMID |
|---|---|---|---|---|
| Menopausal symptoms in women on antihormonal breast cancer therapy | No effect | Grade D | Crossover RCT · n = 46 · 2015 Women with breast cancer on tamoxifen or aromatase inhibitors with severe menopausal complaints (Germany) Form: Bee pollen mixed with honey, compared with pure honey · Dose: One tablespoon of the pollen-honey mixture or honey · Duration: 14 days per arm, 14-day washout Symptoms improved in 71% (22/31) with pollen-honey and 68% (28/41) with honey alone, a non-significant difference; both arms improved on the Menopause Rating Scale. | 26171198 (opens PubMed)Source [1] |
Forms
| Form | Elemental % | Absorption (human data) | GI tolerance | Studied for |
|---|---|---|---|---|
| Bee pollen granules | Varies[7] | No human absorption data.[7] | Anaphylaxis has been reported within hours of a tablespoon, including in people with seasonal pollen allergy.[4][6] | Case reports and one menopause crossover |
| Bee pollen mixed with honey | Varies[1] | No human absorption data.[1] | People with pollen or honey allergy were excluded from the menopause trial.[1] | Menopausal symptoms in breast cancer survivors |
Studied doses
Doses studied in human trials ranged from one tablespoon of a pollen-honey mixture, for 14 days per arm in a single crossover. Case reports describe one teaspoon twice daily and single tablespoon servings.[1][2][4]
Interactions
Published interactions only: each row cites a source. No row means none was found in our sources, not that a combination is safe.
Medicines
- WarfarinCase reportA probable interaction: INR rose to 7.1 (target 2–3) a month after a man on stable warfarin started bee pollen; his warfarin dose was cut 11%.[2]
Who should be careful
- Pollen, honey or bee-product allergy
- Bee pollen has caused anaphylaxis, including exercise-related anaphylaxis, often in people with seasonal pollen allergy; people with atopy and beekeepers are at higher risk.[3][4][5][6][8]
- People on warfarin
- A case report linked bee pollen to a sharp INR rise in a patient on stable warfarin.[2]
- Heart conditions (weight-loss products)
- FDA found hidden sibutramine in bee pollen capsules marketed for weight loss and warned of risk for people with coronary artery disease, heart failure, arrhythmias or stroke.[10]
- Pregnancy and breastfeeding
- The menopause trial excluded pregnancy, and no safety data for pregnancy or breastfeeding were found.[1]
Talk to your pharmacist or clinician before starting a supplement, especially if you take prescription medicines.
Allergic reactions
The best-documented risk of bee pollen.
How to read the label
- Label dose vs studied doseProducts are dosed by the spoonful or capsule; the only controlled study used one tablespoon of a pollen-honey mixture and found no benefit over honey.[1]
- Botanical source variesBee pollen contents depend on the flowers bees visited, which can include allergenic weed pollens.[4][7]
- Weight-loss 'bee pollen' capsulesFDA laboratory tests found sibutramine, a drug withdrawn in 2010, in bee pollen capsules sold for weight loss; it can substantially raise blood pressure or pulse and may interact with other medicines.[10]
Frequently asked questions
What are the proven benefits of bee pollen?
None are established in people. The only controlled trial found on this page, in 46 women with breast cancer, found pollen-honey no better than honey for menopausal symptoms.[1]
Can bee pollen cause allergic reactions?
Yes. Several case reports describe anaphylaxis after eating bee pollen, often in people with seasonal pollen allergies.[3][4][6][8]
Is bee pollen safe with warfarin?
One case report described a probable interaction: INR rose to 7.1 a month after a man on stable warfarin started bee pollen.[2]
What nutrients does bee pollen contain?
Proteins and amino acids, lipids, carbohydrates, minerals, vitamins and polyphenols, in amounts that vary with the plants the bees visited.[7]
Can bee pollen be contaminated?
A 2026 review reports frequent mycotoxins in bee pollen, occasionally above safe intake levels.[9]
Sources
- [1]Bee pollen and honey for the alleviation of hot flushes and other menopausal symptoms in breast cancer patients.. Mol Clin Oncol, 2015. crossover-RCT
- [2]Probable interaction between warfarin and bee pollen.. Am J Health Syst Pharm, 2010. observational
- [3]Anaphylaxis from bee pollen supplement.. CMAJ, 2012. observational
- [4]Bee Pollen-Induced Anaphylaxis: A Case Report and Literature Review.. Allergy Asthma Immunol Res, 2015. observational
- [5]Exercise-induced anaphylaxis associated with the use of bee pollen.. Ann Allergy Asthma Immunol, 2019. observational
- [6]Supplemental Bee Pollen Ingestion With Resultant Anaphylaxis and Allergic Asthma: Case Report.. Case Reports Immunol, 2026. observational
- [7]Bee Pollen: Current Status and Therapeutic Potential.. Nutrients, 2021. review
- [8]Ensuring the Safe Use of Bee Products: A Review of Allergic Risks and Management.. Int J Mol Sci, 2025. review
- [9]An Update on Mycotoxins in Bee Pollen.. Toxins (Basel), 2026. review
- [10]Public Notification: Asset Bee Pollen Contains Hidden Drug Ingredient. U.S. Food and Drug Administration, 2014. safety-communication
What changed
- Independent review: added FDA public notification of sibutramine-adulterated weight-loss bee pollen capsules (2014). All PMIDs re-checked.
- First draft. Every PMID checked against NCBI E-utilities esummary (title and year taken from the record) and abstracts read for the cited rows. Münstedt 2015 dose (one tablespoonful) and 14-day periods confirmed in the publisher full text (Mol Clin Oncol, doi 10.3892/mco.2015.559). Jagdis 2012 and McNamara 2019 have no PubMed abstract and are cited by title for anaphylaxis only. Page set indexable.