Drug & supplement interaction

Beth Root + Thiotepa

Thiotepa brand names: Thioplex, Tepadina.

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 Beth Root and Thiotepa 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

Beth Root and Thiotepa

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 Thiotepa and Beth Root 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.

Worth understanding: our licensed dataset holds no drug-interaction record for Beth Root at all — not against Thiotepa, and not against any other medication we track. This verdict therefore rests on the absence of any recorded data, not on research that looked at this combination and found nothing. We cannot rule an interaction out.

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.

Beth Root safety at a glance

Beth Root overall Use caution Little modern safety data exists, so use cautiously and talk to a healthcare provider first.
Pregnancy Likely Unsafe When used orally; avoid using. Beth root might have menstrual or uterine stimulant activity. Read the full pregnancy detail
Breastfeeding Likely Unsafe When used orally; avoid using. Beth root might have menstrual or uterine stimulant activity. 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 Thiotepa and Beth Root? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
What to actually watch for

No Interaction Found — But Data Suggests Beth Root and Thiotepa 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

    Beth Root

    “Orally, ingestion of large amounts of the plant or volatile oil might produce GI irritation severe enough to cause vomiting (12,18). In pregnant women, the drastic purgative effects can cause reflex uterine contractions.

    Topically, beth root causes extreme irritation (18).”

    Beth Root · Natural Medicines adverse-effect record, reported in nausea and vomiting.

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

    Thiotepa

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

Effects for Thiotepa come from the ADVERSE REACTIONS section of its FDA label; effects for Beth Root come from the Natural Medicines adverse-effect record, quoted above. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

Special populations

Beth Root in Pregnancy & Breastfeeding

Pregnancy And Lactation Likely Unsafe

When used orally; avoid using. Beth root might have menstrual or 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 Thiotepa

This page covers Beth Root only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Thiotepa page lists 146 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Grapefruit (major), St. John's Wort (major), Acacia Rigidula (moderate) and Acerola (moderate).

By severity: 3 major · 102 moderate · 41 minor.

From our pharmacist’s overview on the Thiotepa page

“Thiotepa (Thioplex, Tepadina) is chemotherapy, given for several cancers and to prepare patients for stem cell transplant, so its 146 supplement interactions make up a list to respect rather than skim. Three carry a major rating: grapefruit, St.”

Reviewed by 2 · Jul 18, 2026

Open the Thiotepa interaction page

How much people look this up

Where Beth Root and Thiotepa 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 Beth Root
Top half

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

29 days ago today
Medication Thiotepa
Steady interest

#1,824 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 Beth Root reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Beth Root and Thiotepa records this page draws on were last updated July 10, 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 Beth Root

What is Beth Root?

  • Heavy menstrual bleeding
  • Menstrual cramps
  • Childbirth and postpartum bleeding
  • Wounds and skin irritation
  • Diarrhea

Beth root is a traditional North American plant remedy historically used by Indigenous peoples and folk herbalists, mostly for menstrual and bleeding-related complaints. There is very little modern scientific evidence to show it works for any condition, and its safety has not been well studied, so caution is advised—especially during pregnancy and breastfeeding.

Trillium erectum · Melanthiaceae · Dried root and rhizome · Dried root, tincture, tea, powder, capsules

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

Beth Root: dosing

There is no established or standardized dose for beth root. It has not been studied enough to know a safe and effective amount, and the strength of products can vary widely.If you choose to use a commercial product, follow the directions on the label and do not exceed them.

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

Read the full Beth Root monograph & all interactions
Medication

About Thiotepa Injection

What Is Thiotepa Injection Used For?

Brand names: Thioplex, Tepadina

Tepadina (thiotepa) injection is used for several purposes. It treats adenocarcinoma (a type of cancer) of the breast or ovary. It is also used to control malignant effusions — abnormal fluid buildup in body cavities caused by cancer spreading to those areas. For bladder cancer, Tepadina treats superficial papillary carcinoma of the urinary bladder.

Tepadina is also used in pediatric patients with class 3 beta-thalassemia (a severe inherited blood disorder). In those patients, it is given as part of a preparative regimen — a conditioning treatment to reduce the risk of graft rejection before an allogeneic stem cell transplant (a transplant using donor stem cells), alongside the chemotherapy drugs busulfan and cyclophosphamide.

Most-Reported Side Effects for Thiotepa

From FAERS, the FDA’s public side-effect reporting system (9,494 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Febrile neutropenia 814 reports
Mucosal inflammation 807 reports
Cytomegalovirus infection 533 reports
Fever 516 reports
Acute graft versus host disease 458 reports
See full Thiotepa Injection drug information
Keep checking

Other Drugs & Beth Root

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

0Major
0Moderate
0Minor
2,829No known interaction
2,829 No interaction
No interaction 2,829 drugs checked — show the list

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

Showing the 60 most looked-up of 2,829 medications checked with no known interaction — see the full Beth Root list.

See the full Beth Root interactions page
See every supplement checked against Thiotepa, ranked by severity
Evidence & sources

Beth Root References

The 2 references that drive our Beth Root 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. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  2. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.

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 Beth Root and Thiotepa Together: Common Questions

Is it safe to take Beth Root with Thiotepa?
We do not list a known interaction between Beth Root and Thiotepa. 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 Beth Root and Thiotepa 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.
Does Thiotepa interact with any supplements?
Yes. Thiotepa has documented interactions with 146 supplements in our database — Beth Root is not one of them. The Thiotepa 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

Beth Root monograph Uses, safety profile, and every drug interaction in one place Thiotepa Injection drug information The full plain-English guide to this medication Thiotepa supplement interactions Every supplement checked against Thiotepa, 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 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Thiotepa and Beth Root?

Our pharmacists answer your medication & supplement questions — free.

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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.