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Dietary supplement

Pennyroyal Mint Flavor Ingredients & Drug Interactions

by TerraVita

Pennyroyal Mint Flavor label
See full label image
Liquid Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Pennyroyal Mint Flavor against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Pennyroyal Mint Flavor is a dietary supplement by TerraVita with 1 active ingredient. Its ingredients are commonly taken for digestive upset, menstrual cramps, inducing menstruation or abortion (dangerous).Based on those ingredients, 69 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Pennyroyal Glycerite Liquid Extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Pennyroyal Mint Flavor by TerraVita

Ask about any prescription or over-the-counter medication and we check it for interactions with Pennyroyal Mint Flavor by TerraVita — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Pennyroyal Mint Flavor by TerraVita

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: pennyroyal glycerite liquid extract. The extract is suspended in glycerin and flavored with mint.

Pennyroyal is an herb traditionally used for various conditions, though the evidence supporting those uses is not established in the data we hold.

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

This is a single-ingredient Pennyroyal product and its label doesn't state a use — see Pennyroyal's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence for pennyroyal is insufficient to rate its effectiveness for gallbladder disease, gout, insect repellent, common cold, pneumonia, or canker sores. We don't have reliable data showing it works for any of these purposes.

The evidence, ingredient by ingredient Pennyroyal

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Pennyroyal oil is highly toxic and has caused liver failure and death. This product should not be used in pregnancy—the safety data advises against it because pennyroyal can cause abortion and severe poisoning.

It is also not safe while breastfeeding. Even herbal teas made from pennyroyal leaves carry some risk of dizziness, nausea, and abdominal cramping.

The essential oil form is associated with much more severe effects, including liver failure and heart rhythm problems. Topically, pennyroyal oil can cause rashes and skin inflammation.

Side effects, ingredient by ingredient Pennyroyal

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Pennyroyal.
  • The most serious interaction on file is rated Moderate.
  • For scale: 69 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Do not take this product with acetaminophen (Tylenol and other fever or pain relievers) without talking to your pharmacist first. The combination carries a documented Moderate risk of liver damage.

Check all your medications with the tool on this page before starting.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Given the documented liver toxicity and serious adverse effects on record, pennyroyal is not a product we'd recommend for most people. If you're considering it, talk with your pharmacist or doctor first—especially if you take any pain relievers or have liver concerns.

It is unsafe in pregnancy and while breastfeeding.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Nov 22, 2022.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Pennyroyal Mint Flavor, straight from the product label.

Brand TerraVita
Barcode (UPC) 064435228262
Net contents 1 Fluid Ounce(s); 30 mL
Market status On market
Date entered into DSLD Nov 22, 2022
DSLD ID 281022
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Pennyroyal Mint Flavor by TerraVita, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
25 Drop(s)
Maximum serving Sizes:
40 Drop(s)
Servings per container
227
UPC/BARCODE
064435228262
IngredientAmount% DV
Pennyroyal Glycerite Liquid Extract0.13 mL--

Other ingredients: Glycerin, Mint Flavor

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Brand IP Statement(s)

Copyright 2018 TerraVita - Distributed by ZooScape LLC, All Rights Reserved.

Formula

Glycerite liquid extract (1:5)

Formulation

Alcohol free

Suggested/Recommended/Usage/Directions

Suggested Use: Take 25-40 drops of extract in a small amount of warm water 3-4 times daily. Shake well before using.

Precautions

Keep away from children.

Do not use if safety seal around cap is broken or missing.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Pennyroyal Mint Flavor by TerraVita label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Pennyroyal Mint Flavor label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Pennyroyal Mint Flavor by TerraVita

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size25 Drop(s) Dosage formLiquid Servings per container227 Amounts shown are per serving.

Pennyroyal Glycerite Liquid Extract

Interacts with
69 drugs
0.13 mL per serving

Pennyroyal is a mint-family plant whose essential oil is highly toxic and has caused serious poisonings and deaths, especially when used to try to bri...

Pennyroyal Glycerite Liquid Extract monograph & interactions

Other (inactive) ingredients: Glycerin, Mint Flavor. These complete the product’s ingredient list but are not active constituents.

Interaction report

Pennyroyal Mint Flavor by TerraVita Drug Interactions

Want to check YOUR meds against Pennyroyal Mint Flavor?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
69Drugs
69 Moderate

Ingredients driving the most interactions

Pennyroyal Glycerite Liquid Extract 69

Individual Drug Interactions

The ingredients in Pennyroyal Mint Flavor interact with 69 drugs. Click any drug to see the details.

1 of the 1 ingredient in Pennyroyal Mint Flavor interact with drugs. Each result below shows which ingredient is responsible. Pennyroyal Glycerite Liquid Extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Pennyroyal Mint Flavor with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Pennyroyal Glycerite Liquid Extract1 drug type · 69 drugs

Acetaminophen (Tylenol, Others)

Concomitant use of pennyroyal essential oil and acetaminophen might increase the risk of acetaminophen-induced hepatotoxicity.
Pennyroyal is hepatotoxic and depletes hepatic glutathione levels in a similar manner to acetaminophen. A case report describes hepatic failure in a female who took pennyroyal and acetaminophen concurrently.

Likelihood Possible Evidence D
Pennyroyal Glycerite Liquid Extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Pennyroyal Mint Flavor, from the product label.

TerraVita

See all TerraVita products
Name
ZooScape LLC
Phone Number
844-449-0444
Web Address
www.ZooScape.com
Pharmacist Counseling Corner

Pennyroyal Mint Flavor by TerraVita: Common Questions

Does Pennyroyal Mint Flavor by TerraVita interact with any medications?
Yes. Based on its ingredients, Pennyroyal Mint Flavor has a known interaction with 69 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Pennyroyal Mint Flavor contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I use this if I'm pregnant or breastfeeding?
No. Pennyroyal is rated likely unsafe in pregnancy—it can cause abortion and severe poisoning. It is also not safe while breastfeeding. If you're planning pregnancy or are pregnant or breastfeeding, do not use this product.
What are the common side effects?
When pennyroyal is taken as a leaf tea, the most common mild effects are dizziness, nausea, and abdominal cramping. The essential oil form is linked to much more serious effects, including liver failure and dangerous heart rhythm changes. Topically, pennyroyal oil can cause rashes and skin inflammation.
Is this safe to take with Tylenol or other pain relievers?
No. Taking pennyroyal with acetaminophen (Tylenol) is a documented Moderate-severity interaction. Both substances are toxic to the liver in similar ways, and a case report describes liver failure when someone took both together. Avoid this combination and check all your other medications with our tool before starting.
Does pennyroyal actually work for colds, gout, or other conditions?
We don't have reliable evidence that pennyroyal is effective for common cold, pneumonia, gout, gallbladder disease, canker sores, or insect repellent. The evidence for these uses is rated insufficient, which means it hasn't been properly established.

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

Not sure if Pennyroyal Mint Flavor is safe with your meds?

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Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Pennyroyal Mint Flavor label
Go deeper

The Full Monographs Behind Pennyroyal Mint Flavor’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Pennyroyal

Interacts with 69 drugs

Pennyroyal is a mint-family plant whose essential oil is highly toxic and has caused serious poisonings and deaths, especially when used to try to bring on a period or end a pregnancy. There...

Read the full Pennyroyal monograph →
Sources

Sources & How We Checked

Pennyroyal Mint Flavor's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 8 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Pennyroyal 8 references
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  3. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  4. Bakerink JA, Gospe SM Jr, Dimand RJ, Eldridge MW. Multiple organ failure after ingestion of pennyroyal oil from herbal tea in two infants. Pediatrics 1996;98:944-7. DOI
  5. Sudekum M, Poppenga RH, Raju N, Braselton WE Jr. Pennyroyal oil toxicosis in a dog. J Am Vet Med Assoc 1992;200:817-8.. DOI
  6. Anderson IB, Mullen WH, Meeker JE, et al. Pennyroyal toxicity: measurement of toxic metabolite levels in two cases and review of the literature. Ann Intern Med 1996;124:726-34. PubMed
  7. Sullivan JB Jr, Rumack BH, Thomas H Jr, et al. Pennyroyal oil poisoning and hepatotoxicity. JAMA 1979;242:2873-4. DOI
  8. Fozard J, Hieger M. Hepatic failure from pennyroyal tea interaction with medications metabolized by the cytochrome P450 enzymes. Am J Ther 2019 Aug 13. doi: 10.1097/MJT.0000000000001052. [Epub ahead of print]. PubMed

See these in context on the Pennyroyal monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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