Drug & supplement interaction

Dusty Miller + Methenamine Hippurate

Methenamine Hippurate brand names: Urex, Hiprex.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 27, 2026
The bottom line No known interaction

We found no known interaction between Dusty Miller and Methenamine Hippurate 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

Dusty Miller and Methenamine Hippurate

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 Methenamine Hippurate and Dusty Miller 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.

Dusty Miller safety at a glance

Dusty Miller overall Avoid It can contain liver-toxic pyrrolizidine alkaloids and is not recommended for internal or homemade use.
Pregnancy Likely Unsafe When used orally. Dusty miller preparations containing hepatotoxic pyrrolizidine alkaloid (PA) constituents might be teratogenic and hepatotoxic. There is insuf... Read the full pregnancy detail
Breastfeeding Likely Unsafe When used orally. Hepatotoxic pyrrolizidine alkaloid (PA) constituents in dusty miller are excreted in milk. There is insufficient reliable information availabl... Read the full breastfeeding detail

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 Methenamine Hippurate and Dusty Miller? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Methenamine Hippurate

Interactions in our licensed database are recorded against drug classes, not just single drug names. Methenamine Hippurate is filed under 2 classifications — antibiotic drugs, oral drugs. Dusty Miller has documented interactions with 1 drug class — the most serious being cytochrome p450 3a4 (cyp3a4) inducers (moderate) — and none of Methenamine Hippurate’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

Dusty Miller Does Interact With Other Medications

Dusty Miller has 87 moderate known drug interactions in our database — Methenamine Hippurate isn’t one of them. If you take anything else, check it against the full list below.

Moderate 87 No known interaction 2,743 (incl. Methenamine Hippurate)
Taking anything else?

Check Another of Your Medications Against Dusty Miller

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

What to actually watch for

No Interaction Found — But Data Suggests Dusty Miller and Methenamine Hippurate May Share a Side Effect

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.

  • Vomiting Additional detail

    Dusty Miller

    “Orally, the major concern with dusty miller use is its pyrrolizidine alkaloid (PA) content. These constituents can cause liver injury. Chronic exposure to other plants containing hepatotoxic PA constituents is associated with veno-occlusive disease. Subacute veno-occlusive disease can cause vague symptoms, including colicky pains, vomiting, diarrhea, and ascites within several days;”

    Dusty Miller · Natural Medicines adverse-effect record, reported in diarrhea.

    4 sources cited
    1. 12386. Danesch U, Rittinghausen R. Safety of a patented special butterbur root extract for migraine prevention. Headache 2003;43:76-8.. PubMed
    2. 12841. Chojkier M. Hepatic sinusoidal-obstruction syndrome: toxicity of pyrrolizidine alkaloids. J Hepatol 2003;39:437-46. PubMed
    3. 12842. Roeder E. Medicinal plants in Europe containing pyrrolizidine alkaloids. Pharmazie 1995;50:83-98.
    4. 4021. WHO working group. Pyrrolizidine alkaloids. Environmental Health Criteria, 80. WHO: Geneva, 1988.

    Methenamine Hippurate

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

Reported for Dusty Miller but not commonly for Methenamine Hippurate: raised blood pressure, liver problems and diarrhea.

Effects for Methenamine Hippurate come from the ADVERSE REACTIONS section of its FDA label; effects for Dusty Miller come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 1,210 voluntary FDA FAERS reports for Methenamine Hippurate 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

Dusty Miller in Pregnancy & Breastfeeding

Pregnancy Likely Unsafe

When used orally. Dusty miller preparations containing hepatotoxic pyrrolizidine alkaloid (PA) constituents might be teratogenic and hepatotoxic. There is insufficient reliable information available about the safety of dusty miller products that do not contain hepatotoxic PAs when used during pregnancy.

Lactation Likely Unsafe

When used orally. Hepatotoxic pyrrolizidine alkaloid (PA) constituents in dusty miller are excreted in milk. There is insufficient reliable information available about the safety of dusty miller products that do not contain hepatotoxic PAs when used during lactation.

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 Methenamine Hippurate

This page covers Dusty Miller only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Methenamine Hippurate page lists 44 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Bacillus Coagulans (moderate), Bacillus Subtilis (moderate), Bifidobacterium Animalis Subsp. Lactis (moderate) and Bifidobacterium Bifidum (moderate).

By severity: 1 major · 33 moderate · 10 minor.

From our pharmacist’s overview on the Methenamine Hippurate page

“Most people taking methenamine hippurate (Hiprex, Urex) use it daily to prevent repeat urinary tract infections, and many also take probiotics, which is where the bulk of this 44-ingredient list sits. Even so, the page deserves real vigilance, because one entry is rated major.”

Reviewed by 2 · Jul 18, 2026

Open the Methenamine Hippurate interaction page

How much people look this up

Where Dusty Miller and Methenamine Hippurate 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 Dusty Miller
Top half

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

29 days ago today
Medication Methenamine Hippurate
Steady interest

#2,023 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 Dusty Miller reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 27, 2026. The Dusty Miller and Methenamine Hippurate 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 Dusty Miller

What is Dusty Miller?

  • Cataracts (traditional eye use)
  • Eye irritation and inflammation
  • Wound healing (folk use)
  • Menstrual complaints (folk use)

Dusty Miller is a silvery ornamental plant that has been used in folk medicine, mainly as an eye remedy for cataracts and irritation. There is no reliable scientific evidence that it works, and the plant contains compounds (pyrrolizidine alkaloids) that can be toxic, so it is not considered safe for self-treatment. Talk to a pharmacist or doctor before using any product made from it.

Jacobaea maritima · Asteraceae · Leaves and flowering tops; historically the plant juice · Traditional eye drops/eyewash, homeopathic preparations, tinctures

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

Dusty Miller: dosing

There is no established or safe dose for Dusty Miller. Because the plant can be toxic and has no proven medical benefit, no reliable dosing guidelines exist for any form.We do not recommend self-treating with this plant.

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

Read the full Dusty Miller monograph & all interactions
Medication

About Methenamine

What Is Methenamine Used For?

Brand names: Urex, Hiprex

Methenamine is used to suppress or prevent frequently recurring urinary tract infections (UTIs), including pyelonephritis (kidney infection) and cystitis (bladder infection). It is intended for long-term or ongoing use after another antibiotic has already cleared the active infection — not as a first treatment for a new, acute infection.

Methenamine Mandelate (available as an oral solution and tablet) is also indicated for infected residual urine that can occur with certain neurologic diseases. It is not appropriate as the sole treatment when an infection is causing systemic symptoms like chills and fever.

Most-Reported Side Effects for Methenamine Hippurate

From FAERS, the FDA’s public side-effect reporting system (1,210 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Urinary tract infection 163 reports
Diarrhea 81 reports
Nausea 80 reports
Fall 74 reports
Fatigue 74 reports
See full Methenamine drug information
Keep checking

Other Drugs & Dusty Miller

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

0Major
87Moderate
0Minor
2,742No known interaction
87 Moderate 2,742 No interaction
Moderate

87 interactions

Showing 60 of 87 moderate interactions — see all 87 on the Dusty Miller page.

No interaction 2,742 drugs checked — show the list

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

Showing the 60 most looked-up of 2,742 medications checked with no known interaction — see the full Dusty Miller list.

See the full Dusty Miller interactions page
See every supplement checked against Methenamine Hippurate, ranked by severity
Evidence & sources

Dusty Miller References

The 5 references that drive our Dusty Miller 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. WHO working group. Pyrrolizidine alkaloids. Environmental Health Criteria, 80. WHO: Geneva, 1988.
  2. Danesch U, Rittinghausen R. Safety of a patented special butterbur root extract for migraine prevention. Headache 2003;43:76-8.. PubMed
  3. Chojkier M. Hepatic sinusoidal-obstruction syndrome: toxicity of pyrrolizidine alkaloids. J Hepatol 2003;39:437-46. PubMed
  4. Roeder E. Medicinal plants in Europe containing pyrrolizidine alkaloids. Pharmazie 1995;50:83-98.
  5. Wang YP, Yan J, Fu PP, Chou MW. Human liver microsomal reduction of pyrrolizidine alkaloid N-oxides to form the corresponding carcinogenic parent alkaloid. Toxicol Lett 2005;155:411-20. 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 Dusty Miller and Methenamine Hippurate Together: Common Questions

Is it safe to take Dusty Miller with Methenamine Hippurate?
We do not list a known interaction between Dusty Miller and Methenamine Hippurate. 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 Dusty Miller and Methenamine Hippurate have any of the same side effects?
Yes — our sources link each of them separately to one 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.
How was the Dusty Miller and Methenamine Hippurate combination checked?
Interactions in our licensed database are recorded against drug classes. Methenamine Hippurate is filed under 2 classifications, and Dusty Miller has documented interactions with 1 drug class — none of Methenamine Hippurate'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 Dusty Miller interact with any other medications?
Yes. Dusty Miller has 87 documented drug interactions in our database — Methenamine Hippurate 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 Methenamine Hippurate interact with any supplements?
Yes. Methenamine Hippurate has documented interactions with 44 supplements in our database — Dusty Miller is not one of them. The Methenamine Hippurate 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

Dusty Miller monograph Uses, safety profile, and every drug interaction in one place Methenamine drug information The full plain-English guide to this medication Methenamine Hippurate supplement interactions Every supplement checked against Methenamine Hippurate, 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 5 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Methenamine Hippurate and Dusty Miller?

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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.