Drug & supplement interaction

Dyer's Broom + Dexfenfluramine

Dexfenfluramine brand name: Redux.

No Known Interaction

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Updated July 2026 · Pair last verified Sep 20, 2026

The bottom line No known interaction

We found no known interaction between Dyer's Broom and Dexfenfluramine 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.

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Interaction report

Dyer's Broom and Dexfenfluramine

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 Dexfenfluramine and Dyer's Broom 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.

Dyer's Broom safety at a glance

Dyer's Broom overall Use caution It contains potentially toxic alkaloids and has little safety data, so caution is advised.

Pregnancy Possibly Unsafe When used orally. Dyer's broom may have uterine stimulant activity. Read the full pregnancy detail

Breastfeeding Avoid Avoid while breastfeeding due to a lack of safety information.

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 Dexfenfluramine and Dyer's Broom? Ask Dr. Brian Staiger, PharmD, BCPS directly ›

How we checked

Why No Interaction Is Listed for Dexfenfluramine

Interactions in our licensed database are recorded against drug classes, not just single drug names. Dexfenfluramine is filed under 2 classifications — cytochrome p450 2d6 (cyp2d6) substrates, oral drugs. Dyer's Broom has documented interactions with 1 drug class — the most serious being caffeine (moderate) — and none of Dexfenfluramine’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

Dyer's Broom Does Interact With Other Medications

Dyer's Broom has 29 moderate known drug interactions in our database — Dexfenfluramine isn’t one of them. If you take anything else, check it against the full list below.

Moderate 29 No known interaction 2,801 (incl. Dexfenfluramine)

Taking anything else?

Check Another of Your Medications Against Dyer's Broom

Covers the 2,830 medications we’ve checked against Dyer's Broom. Pick one to open its full report.

What to actually watch for

What Dyer's Broom Itself Has Been Linked To

This is not an interaction — nothing below involves Dexfenfluramine. It is the side-effect record for Dyer's Broom on its own, from the licensed Natural Medicines monograph. If something new turns up after you add Dyer's Broom, this list is the first place to look.

Diarrhea / Vomiting / Nausea Additional detail
“Orally, dyer's broom may cause nausea and vomiting (12). Overuse of dyer's broom can lead to diarrhea (12,18).”

Dyer's Broom · Natural Medicines adverse-effect record, reported in diarrhea.
2 sources cited

12. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.

18. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

Everything above comes from the Natural Medicines adverse-effect record for Dyer's Broom — expand a row for the licensed statement it rests on. We haven’t matched Dexfenfluramine to its FDA label in our system yet, so we can’t compare its own side-effect list here — the leaflet that comes with your prescription is the authoritative list for Dexfenfluramine.

Special populations

Dyer's Broom in Pregnancy & Breastfeeding

Pregnancy Possibly Unsafe

When used orally. Dyer's broom may have uterine stimulant activity.

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

Everything else you take

See Every Supplement That Interacts With Dexfenfluramine

This page covers Dyer's Broom only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Dexfenfluramine page lists 77 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), 1,3-dmaa (moderate), Acacia Rigidula (moderate), Active Hexose Correlated Compound (ahcc) (moderate) and Ayahuasca (moderate).

By severity: 1 major · 56 moderate · 20 minor.

From our pharmacist’s overview on the Dexfenfluramine page

“People taking dexfenfluramine (Redux) for weight loss often shop the same supplement shelf (fiber bulkers, herbal appetite aids, stimulant blends), and that overlap is why this list deserves genuine care, not a quick skim. Of the 77 ingredients on file, 60 can slow the CYP2D6 enzyme that clears dexfenfluramine, letting the drug's blood…”

Reviewed by 2 · Jul 18, 2026

Open the Dexfenfluramine interaction page

One more smart check

Taking Dyer's Broom as Part of a Dietary Supplement Product? Check It for Interactions

We hold 8 real supplement products containing Dyer's Broom, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Dyer's Broom. Even though Dyer's Broom itself has no known interaction with Dexfenfluramine, 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 Dyer's Broom and Dexfenfluramine 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 Dyer's Broom

Steady interest

#1,012 of 1,452 supplements looked up here in the last 7 days

29 days ago today

Medication Dexfenfluramine

Top 25%

#335 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 Dyer's Broom reference on this page ↓
Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Dyer's Broom and Dexfenfluramine 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 Dr. Brian Staiger, PharmD, BCPS.

Supplement

About Dyer's Broom

What is Dyer's Broom?

Skin irritation
Respiratory complaints
Gout
Lower back and pelvic pain
Digestive upset
As a natural yellow dye

Dyer's broom is a European flowering plant best known historically as a source of yellow textile dye, with some traditional medicinal uses. There is very little reliable human research to support any health benefit, and it contains compounds that can be toxic in larger amounts, so it should be used cautiously, if at all. Talk to your pharmacist or doctor before trying it.

Genista tinctoria · Fabaceae · Flowering tops, stems, and sometimes roots · Tea, dried herb, tincture, topical preparations

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

Dyer's Broom: dosing

There is no established standard dose for dyer's broom, and no reliable human research to guide safe amounts. The concentration of active compounds can vary widely between products and plant batches.If you choose to use a commercial product, follow the directions on the label and do not exceed them.

From our Dyer's Broom monograph — the full record covers uses, side effects and every documented interaction.

Read the full Dyer's Broom monograph & all interactions

Keep checking

Other Drugs & Dyer's Broom

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

0Major

29Moderate

0Minor

2,800No known interaction

29 Moderate 2,800 No interaction

Moderate

29 interactions

No interaction 2,800 drugs checked — show the list

We also checked Dyer's Broom against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,800 medications checked with no known interaction — see the full Dyer's Broom list.

See the full Dyer's Broom interactions page

See every supplement checked against Dexfenfluramine, ranked by severity

Evidence & sources

Dyer's Broom References

The 3 references that drive our Dyer's Broom 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.

McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
Chen, Y., Xiao, C. Q., He, Y. J., Chen, B. L., Wang, G., Zhou, G., Zhang, W., Tan, Z. R., Cao, S., Wang, L. P., and Zhou, H. H. Genistein alters caffeine exposure in healthy female volunteers. Eur.J Clin.Pharmacol. 2011;67(4):347-353. 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 Dyer's Broom and Dexfenfluramine Together: Common Questions

Is it safe to take Dyer's Broom with Dexfenfluramine?

We do not list a known interaction between Dyer's Broom and Dexfenfluramine. 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.

How was the Dyer's Broom and Dexfenfluramine combination checked?

Interactions in our licensed database are recorded against drug classes. Dexfenfluramine is filed under 2 classifications, and Dyer's Broom has documented interactions with 1 drug class — none of Dexfenfluramine'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 Dyer's Broom interact with any other medications?

Yes. Dyer's Broom has 29 documented drug interactions in our database — Dexfenfluramine 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 Dexfenfluramine interact with any supplements?

Yes. Dexfenfluramine has documented interactions with 77 supplements in our database — Dyer's Broom is not one of them. The Dexfenfluramine 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

Dyer's Broom monograph Uses, safety profile, and every drug interaction in one place Dexfenfluramine supplement interactions Every supplement checked against Dexfenfluramine, 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 3 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Dexfenfluramine and Dyer's Broom?

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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.