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Dietary supplement

Tansy Ingredients & Drug Interactions

by Hawaii Pharm

Tansy label
See full label image
Liquid Category: Botanical
Most serious interaction: Major
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Tansy 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: Major

Tansy is a dietary supplement by Hawaii Pharm with 1 active ingredient. Its ingredients are commonly taken for intestinal worms and parasites, digestive upset, menstrual problems.Based on those ingredients, 1 medication has a known interaction with it, the most serious rated major. The ingredients most likely to interact are certified organic Tansy 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 Tansy by Hawaii Pharm

Ask about any prescription or over-the-counter medication and we check it for interactions with Tansy by Hawaii Pharm — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Tansy by Hawaii Pharm

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: certified organic Tansy extract. Tansy is a plant traditionally used in herbal practice, though its safety profile is limited and its thujone content — a potentially toxic compound — makes it risky for internal use.

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 Tansy product and its label doesn't state a use — see Tansy'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.

We hold no effectiveness ratings in our data for tansy, so we cannot tell you what it's intended to do or how well the evidence supports that use.

The evidence, ingredient by ingredient Tansy

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.

Tansy carries serious safety warnings. It contains thujone, which can be poisonous; internal use is generally discouraged.

The adverse effects documented include thujone toxicity — rapid pulse, irregular heartbeat, shortness of breath, severe stomach upset, vomiting, dilated pupils, liver damage, kidney damage, and in rare cases death. Fatalities have been linked to doses as small as 10 drops of tansy oil, with symptoms appearing within 1 to 3.5 hours.

Large doses have also been reported to trigger abortion and uterine bleeding. Tansy is likely unsafe in pregnancy and likely unsafe while breastfeeding.

Topically, it may cause skin reactions like eczema or sun sensitivity in some people.

Side effects, ingredient by ingredient Tansy

Meds to double-check

Major interaction found
Known Interaction Concern · database check
Major identified

At least one ingredient has a documented Major-severity interaction. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Tansy.
  • The most serious interaction on file is rated Major.
  • For scale: 1 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.

If you drink alcohol, do not take this product without talking to your pharmacist first; tansy can intensify and alter alcohol's effects. No other medication interactions are documented for the ingredient we could check, but the toxicity risk of tansy itself is the primary concern.

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. Major medication interactions have been identified, and safety information is well characterized.

We cannot recommend this product. Tansy's thujone content poses a genuine toxicity risk, and the safety data advises against it in pregnancy and while breastfeeding.

If you're considering tansy for any reason, talk with your pharmacist or doctor first — there are almost certainly safer alternatives.

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 21, 2020.

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 Tansy, straight from the product label.

Brand Hawaii Pharm
Barcode (UPC) 650905472329
Net contents 4 Fluid Ounce(s); 120 mL
Market status On market
Date entered into DSLD Nov 21, 2020
DSLD ID 237704
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Organic, Gluten Free
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 Tansy by Hawaii Pharm, 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:
0.7 mL
Maximum serving Sizes:
1 mL
Servings per container
120
UPC/BARCODE
650905472329
IngredientAmount% DV
certified organic Tansy extract970 mg--

Other ingredients: Vegetable Palm Glycerin, pharmaceutical grade Alcohol

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.
General Statements

Hawaii Pharm Herbal Extract Highest quality since 2008

Made with Aloha!

Formulation

Contains no GMO, gluten, artificial colors, heavy metals, preservatives, pesticides, fertilizers.

Super concentrated liquid herbal extract. Dry herb/menstruum ratio: 1:3.

Manufactured in an FDA registered facility.

Non GMO Gluten free

Made in USA, Hawaii

Suggested/Recommended/Usage/Directions

Directions for use: Shake well before using. Take about 20-30 drops (0.7-1 ml, one full squeeze of the dropper bulb) to 2-4 oz of juice or water up to 4 times per day.

Precautions

Warning: Keep out of the reach of children.

May have contraindications. We recommend to seek expert medical advice before taking.

Do not use if you are allergic to any ingredients.

Consult a physician before using during pregnancy, if nursing or taking any medications.

Do not use if seal is broken or missing.

Storage

Store in a cool dry place.

Formula

(Tanacetum vulgare)

FDA Statement of Identity

Herbal Dietary Supplement

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Seals/Symbols

FDA Registered Facility Made in United States of America USA

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

See for yourself

Tansy by Hawaii Pharm label

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

Tansy 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 Tansy by Hawaii Pharm

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

Serving size0.7 mL Dosage formLiquid Servings per container120 Amounts shown are per serving.

Certified organic Tansy extract

Interacts with
1 drug
970 mg per serving

Tansy is a traditional bitter herb that contains thujone, a compound that can be toxic in higher amounts. Because of real safety concerns and very lim...

Certified organic Tansy extract monograph & interactions

Other (inactive) ingredients: Vegetable Palm Glycerin, Pharmaceutical grade Alcohol. These complete the product’s ingredient list but are not active constituents.

Interaction report

Tansy by Hawaii Pharm Drug Interactions

Want to check YOUR meds against Tansy?

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
1Drugs
1 Major

Ingredients driving the most interactions

certified organic Tansy extract 1

Individual Drug Interactions

The ingredients in Tansy interact with 1 drug. Click any drug to see the details.

1 of the 1 ingredient in Tansy interact with drugs. Each result below shows which ingredient is responsible. certified organic Tansy extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Tansy 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.

certified organic Tansy extract1 drug type · 1 drug

Alcohol (Ethanol)

Thujone, a constituent of tansy, can increase and alter the effects of alcohol.

Likelihood Probable Evidence D
certified organic Tansy extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Tansy, from the product label.

Hawaii Pharm

See all Hawaii Pharm products
Name
Hawaii Pharm LLC
City
Honolulu
State
HI
ZipCode
96815
Web Address
www.hawaiipharm.com
Pharmacist Counseling Corner

Tansy by Hawaii Pharm: Common Questions

Does Tansy by Hawaii Pharm interact with any medications?
Yes. Based on its ingredients, Tansy has a known interaction with 1 medication, including 1 rated major. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Tansy 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 take this if I'm pregnant or breastfeeding?
No. Tansy is rated likely unsafe in pregnancy — it's been used traditionally to bring on miscarriage — and likely unsafe while breastfeeding. Do not use it if you're pregnant, planning to become pregnant, or nursing.
What are the side effects?
Thujone toxicity is the main concern. Symptoms include rapid heartbeat, irregular heartbeat, shortness of breath, severe stomach upset, vomiting, dilated pupils, liver damage, and kidney damage. Deaths have occurred with very small doses — as little as 10 drops of tansy oil — with symptoms starting within 1 to 3.5 hours.
Is it safe to drink alcohol while taking this?
No. Tansy's thujone can increase and alter alcohol's effects, which could be unpredictable and dangerous. Avoid alcohol entirely if you take this product.
What is tansy supposed to do?
We don't have effectiveness data for tansy in our system, so I can't tell you what the evidence shows it does or doesn't do. What we do have is clear safety warnings against its internal use.

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

Not sure if Tansy is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.

Tansy label
Go deeper

The Full Monographs Behind Tansy’s Ingredients

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

Herb & supplement monograph

Tansy

Interacts with 1 drug

Tansy is a traditional bitter herb that contains thujone, a compound that can be toxic in higher amounts. Because of real safety concerns and very limited modern evidence, most people should...

Read the full Tansy monograph →
Sources

Sources & How We Checked

Tansy'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 14 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.

Tansy 14 references
  1. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
  2. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  3. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  4. Schulz V, Hansel R, Tyler VE. Rational Phytotherapy: A Physician's Guide to Herbal Medicine. Terry C. Telger, transl. 3rd ed. Berlin, GER: Springer, 1998.
  5. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  6. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  7. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  8. Jovanovic, M. and Poljacki, M. [Compositae dermatitis]. Med Pregl. 2003;56(1-2):43-49. PubMed
  9. Guin, J. D. and Skidmore, G. Compositae dermatitis in childhood. Arch Dermatol. 1987;123(4):500-502. DOI
  10. Jovanovic, M., Poljacki, M., Duran, V., Vujanovic, L., Sente, R., and Stojanovic, S. Contact allergy to Compositae plants in patients with atopic dermatitis. Med Pregl. 2004;57(5-6):209-218. PubMed
  11. Mark, K. A., Brancaccio, R. R., Soter, N. A., and Cohen, D. E. Allergic contact and photoallergic contact dermatitis to plant and pesticide allergens. Arch Dermatol. 1999;135(1):67-70. PubMed
  12. McGuffin M and et al. American Herbal Products Association's Botanical Safety Handbook. 1997.
  13. The Review of Natural Products by Facts and Comparisons. 1999.
  14. Blumenthal, M and et al. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. 1998;

See these in context on the Tansy 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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