Drug & supplement interaction

Bee Pollen + Trimethoprim

Trimethoprim brand names: Proloprim, Trimpex.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Bee Pollen and Trimethoprim in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Bee Pollen and Trimethoprim

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Trimethoprim and Bee Pollen in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Bee Pollen safety at a glance

Bee Pollen overall Use caution Generally tolerated by many people but can trigger allergic reactions, sometimes severe.
Pregnancy Possibly Unsafe When used orally. There is some concern that bee pollen might have uterine stimulant effects; avoid using. Read the full pregnancy detail
Breastfeeding Avoid Safety is unknown, so it is best avoided while breastfeeding.

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center) — the full detail is in the Special populations card below. Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Trimethoprim and Bee Pollen? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Trimethoprim

Interactions in our licensed database are recorded against drug classes, not just single drug names. Trimethoprim is filed under 4 classifications — including qt interval-prolonging drugs, antibiotic drugs, oral drugs. Bee Pollen has documented interactions with 1 drug class — the most serious being warfarin (coumadin) (moderate) — and none of Trimethoprim’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Bee Pollen Does Interact With Other Medications

Bee Pollen has 2 moderate known drug interactions in our database — Trimethoprim isn’t one of them. If you take anything else, check it against the full list below.

Moderate 2 No known interaction 2,828 (incl. Trimethoprim)
Taking anything else?

Check Another of Your Medications Against Bee Pollen

Covers the 2,830 medications we’ve checked against Bee Pollen. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Bee Pollen and Trimethoprim May Share Several of the Same Side Effects

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do. 2 of them are worth acting on rather than waiting out — marked below.

  • A severe allergic reaction Worth acting on Additional detail

    Bee Pollen

    “Patients with a history of seasonal pollen allergies, particularly allergies to plants in the Asteraceae/Compositae family, including ragweed, chrysanthemums, marigolds, daisies, and many other herbs, are at risk for serious allergic reactions to oral bee pollen. Allergic reactions can include itching, swelling, shortness of breath, lightheadedness, and anaphylaxis (5,6,11,13480,33952,33965,91981,91984,109991).”

    Bee Pollen · Natural Medicines adverse-effect record, reported in allergic rhinitis (hay fever).

    6 sources cited
    1. 5. Foster S, Tyler VE. Tyler's Honest Herbal: A Sensible Guide to the Use of Herbs and Related Remedies. 3rd ed., Binghamton, NY: Haworth Herbal Press, 1993.
    2. 6. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
    3. 11. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
    4. 13480. Cohen SH, Yunginger JW, Rosenberg N, Fink JN. Acute allergic reaction after composite pollen ingestion. J Allergy Clin Immunol 1979;64:270-4. PubMed
    5. 33952. Greenberger, P. A. and Flais, M. J. Bee pollen-induced anaphylactic reaction in an unknowingly sensitized subject. Ann.Allergy Asthma Immunol 2001;86(2):239-242. PubMed
    6. 33965. Mansfield LE, Goldstein GB. Anaphylactic reaction after ingestion of local bee pollen. Ann Allergy 1981;47(3):154-156.

    Trimethoprim

    Listed in the ADVERSE REACTIONS section of the FDA label for Trimethoprim. Read the label on DailyMed ›

  • An allergic reaction Worth acting on Additional detail

    Bee Pollen

    “Orally, bee pollen seems to be well tolerated in most patients.

    Serious Adverse Effects (Rare):

    Orally: Acute hepatitis, allergic reactions, interstitial nephritis, kidney failure.”

    Bee Pollen · Natural Medicines adverse-effect record, reported in hepatitis.

    Trimethoprim

    Listed in the ADVERSE REACTIONS section of the FDA label for Trimethoprim. Read the label on DailyMed ›

  • Itching / Vomiting Additional detail

    Bee Pollen

    Recorded for Bee Pollen in the same Natural Medicines adverse-effect record shown under A severe allergic reaction above.

    Trimethoprim

    Listed in the ADVERSE REACTIONS section of the FDA label for Trimethoprim. Read the label on DailyMed ›

Reported for Bee Pollen but not commonly for Trimethoprim: shortness of breath, stomach pain, reduced appetite and dizziness.

Effects for Trimethoprim come from the ADVERSE REACTIONS section of its FDA label; effects for Bee Pollen come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 93,588 voluntary FDA FAERS reports for Trimethoprim that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Bee Pollen in Pregnancy & Breastfeeding

Pregnancy Possibly Unsafe

When used orally. There is some concern that bee pollen might have uterine stimulant effects; avoid using.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.© 2026 Therapeutic Research Center

Overlapping uses

What Trimethoprim Is Prescribed For, and What Bee Pollen Has Been Studied For

These two come up together because they touch the same health topic — not because they do the same job. Trimethoprim is a prescription medicine with approved uses on its FDA label. Bee Pollen is a supplement: what follows is what researchers have looked at it for, and how strong that evidence is.

Trimethoprim is prescribed for: Trimethoprim tablets are used to treat initial episodes of uncomplicated urinary tract infections (UTIs). It works against specific bacteria — including E. coli, Proteus mirabilis, Klebsiella pneumoniae, Enterobacter species, and coagulase-negative Staphylococcus species (including S. saprophyticus).

Read the rest of what Trimethoprim is prescribed for

It should only be used when there is a proven or strongly suspected bacterial infection. Your doctor may order a urine culture to confirm which bacteria are present and whether trimethoprim will work against them.

Bee Pollen has been studied for:

  • Diarrhea studied, not established Bee Pollen has been studied for this. Natural Medicines rates the evidence: Insufficient Reliable Evidence To Rate Read what the research shows

    Bee Pollen for diarrhea

    Although there has been interest in using oral bee pollen for diarrhea, there is insufficient reliable information about the clinical effects of bee pollen for this purpose.

Effectiveness ratings and the research summaries above are the verbatim record from the Natural Medicines database, which grades evidence from “Effective” down to “Insufficient Reliable Evidence To Rate”. A rating below the top of that scale means researchers have looked at it — not that it works, and never that it can stand in for a prescribed medicine. Do not stop or replace Trimethoprim on your own; if you are taking Bee Pollen for the same health topic, tell your prescriber, especially if the medicine is being adjusted to a target.

From our Q&A

Questions About Bee Pollen or Trimethoprim

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Bee Pollen or Trimethoprim, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Trimethoprim

This page covers Bee Pollen only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Trimethoprim page lists 59 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), American Hellebore (major), Arsenic (major), Cesium (major) and Ephedra (major).

By severity: 7 major · 41 moderate · 11 minor.

From our pharmacist’s overview on the Trimethoprim page

“Most prescriptions for trimethoprim are short courses for bladder infections, which makes it easy to assume nothing swallowed alongside it matters much. Seven of the 59 supplement and herbal ingredients here rate major, though, and nearly all of them involve heart rhythm: grapefruit in large amounts, ephedra, and a few others can prolo…”

Reviewed by 2 · Jul 18, 2026

Open the Trimethoprim interaction page

One more smart check

Taking Bee Pollen as Part of a Dietary Supplement Product? Check It for Interactions

We hold 686 real supplement products containing Bee Pollen, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Bee Pollen. Even though Bee Pollen itself has no known interaction with Trimethoprim, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Bee Pollen and Trimethoprim Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Bee Pollen
Top 25%

#282 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Trimethoprim
Steady interest

#2,254 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Bee Pollen reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Bee Pollen and Trimethoprim records this page draws on were last updated July 11, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Bee Pollen

What is Bee Pollen?

Bee Pollen
  • General energy and vitality
  • Immune support
  • Nutritional supplement
  • Athletic performance
  • Allergy relief (traditional belief)
  • Skin and wound care

Bee pollen is a nutrient-rich product collected by bees and marketed as a 'superfood' for energy and immune support, but solid human evidence for most of these claims is lacking. It can cause serious allergic reactions in some people, and it should be avoided during pregnancy and breastfeeding because safety is not established.

Pollen collected by honeybees (often combined with nectar and bee secretions) · Granules, capsules, tablets, powder, chewables

An interaction check asks whether these two react with each other — it does not ask whether Bee Pollen is a good idea for someone in your situation. Here is what our Bee Pollen record says about it on its own.

Bee Pollen: dosing

There is no official or standardized dose for bee pollen. Products vary widely in their content and strength, so the right amount is not well defined.If you choose to use it, follow the directions on the product label and start with a small amount to see how your body reacts.

From our Bee Pollen monograph — the full record covers uses, side effects and every documented interaction.

Read the full Bee Pollen monograph & all interactions
Medication

About Trimethoprim

What Is Trimethoprim Used For?

Brand names: Proloprim, Trimpex

Trimethoprim tablets are used to treat initial episodes of uncomplicated urinary tract infections (UTIs). It works against specific bacteria — including E. coli, Proteus mirabilis, Klebsiella pneumoniae, Enterobacter species, and coagulase-negative Staphylococcus species (including S. saprophyticus).

It should only be used when there is a proven or strongly suspected bacterial infection. Your doctor may order a urine culture to confirm which bacteria are present and whether trimethoprim will work against them.

Most-Reported Side Effects for Trimethoprim

From FAERS, the FDA’s public side-effect reporting system (95,001 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Fever 6,904 reports
Fatigue 5,992 reports
Diarrhea 5,716 reports
Nausea 5,685 reports
Dyspnea 5,098 reports
See full Trimethoprim drug information
Keep checking

Other Drugs & Bee Pollen

Browse every other medication we’ve checked against Bee Pollen — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
2Moderate
0Minor
2,827No known interaction
2 Moderate 2,827 No interaction
Moderate

2 interactions

No interaction 2,827 drugs checked — show the list

We also checked Bee Pollen against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,827 medications checked with no known interaction — see the full Bee Pollen list.

See the full Bee Pollen interactions page
See every supplement checked against Trimethoprim, ranked by severity
Evidence & sources

Bee Pollen References

The 15 references that drive our Bee Pollen monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Foster S, Tyler VE. Tyler's Honest Herbal: A Sensible Guide to the Use of Herbs and Related Remedies. 3rd ed., Binghamton, NY: Haworth Herbal Press, 1993.
  2. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  3. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  4. Shad JA, Chinn CG, Brann OS. Acute hepatitis after ingestion of herbs. South Med J 1999;92:1095-7. PubMed
  5. Puente S, Iniguez A, Subirats M, et al. [Eosinophilic gastroenteritis caused by bee pollen sensitization]. Med Clin (Barc) 1997;108:698-700.
  6. Winther K, Hedman C. Assessment of the Effects of the Herbal Remedy Femal on the Symptoms of Premenstrual Syndrome: A Randomized, Double-Blind, Placebo-Controlled Study. Curr Ther Res Clin Exp 2002;63:344-53. DOI
  7. Cohen SH, Yunginger JW, Rosenberg N, Fink JN. Acute allergic reaction after composite pollen ingestion. J Allergy Clin Immunol 1979;64:270-4. PubMed
  8. Hurren KM, Lewis CL. Probable interaction between warfarin and bee pollen. Am J Health Syst Pharm 2010;67:2034-7. PubMed
  9. Akiyasu T, Paudyal B, Paudyal P, et al. A case report of acute renal failure associated with bee pollen contained in nutritional supplements. Ther Apher Dial 2010;14:93-7. PubMed
  10. Greenberger, P. A. and Flais, M. J. Bee pollen-induced anaphylactic reaction in an unknowingly sensitized subject. Ann.Allergy Asthma Immunol 2001;86(2):239-242. PubMed
  11. Lin FL, Vaughan TR, Vandewalker ML, et al. Hypereosinophilia, neurologic, and gastrointestinal symptoms after bee-pollen ingestion. J Allergy Clin Immunol 1989;83(4):793-796. PubMed
  12. Mansfield LE, Goldstein GB. Anaphylactic reaction after ingestion of local bee pollen. Ann Allergy 1981;47(3):154-156.
  13. Choi JH, Jang YS, Oh JW, Kim CH, Hyun IG. Bee pollen-induced anaphylaxis: a case report and literature review. Allergy Asthma Immunol Res 2015 Sep;7(5):513-7. PubMed
  14. Nonotte-Varly C. Allergenicity of Artemisia contained in bee pollen is proportional to its mass. Eur Ann Allergy Clin Immunol 2015;47(6):218-24.
  15. Leang ZX, Thalayasingam M, O'Sullivan M. A paediatric case of exercise-augmented anaphylaxis following bee pollen ingestion in Western Australia. Asia Pac Allergy. 2022 Jul 12;12(3):e23. PubMed

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Bee Pollen and Trimethoprim Together: Common Questions

Is it safe to take Bee Pollen with Trimethoprim?
We do not list a known interaction between Bee Pollen and Trimethoprim. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Do Bee Pollen and Trimethoprim have any of the same side effects?
Yes — our sources link each of them separately to 4 of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
Are Bee Pollen and Trimethoprim used for the same thing?
They overlap in purpose, which usually means the real question is whether you need both rather than whether they are safe together. This page lists the shared uses and how strong the evidence is for Bee Pollen in each. That is a conversation for your prescriber, especially if Trimethoprim is being adjusted to a target.
How was the Bee Pollen and Trimethoprim combination checked?
Interactions in our licensed database are recorded against drug classes. Trimethoprim is filed under 4 classifications, and Bee Pollen has documented interactions with 1 drug class — none of Trimethoprim's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Bee Pollen interact with any other medications?
Yes. Bee Pollen has 2 documented drug interactions in our database — Trimethoprim is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Trimethoprim interact with any supplements?
Yes. Trimethoprim has documented interactions with 59 supplements in our database — Bee Pollen is not one of them. The Trimethoprim interaction page linked on this page lists every one, ranked by severity.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Where next

Keep Exploring

Bee Pollen monograph Uses, safety profile, and every drug interaction in one place Trimethoprim drug information The full plain-English guide to this medication Trimethoprim supplement interactions Every supplement checked against Trimethoprim, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 15 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Trimethoprim and Bee Pollen?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.