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Dietary supplement

Blue Cohosh Ingredients & Drug Interactions

by Herbal Terra

Blue Cohosh 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 Blue Cohosh 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

Blue Cohosh is a dietary supplement by Herbal Terra with 1 active ingredient. Its ingredients are commonly taken for inducing labor or starting menstruation, menstrual cramps and irregular periods, symptoms of menopause.Based on those ingredients, 259 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are wildcrafted Blue Cohosh (Caulophyllum thalictroides) dried root 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 Blue Cohosh by Herbal Terra

Ask about any prescription or over-the-counter medication and we check it for interactions with Blue Cohosh by Herbal Terra — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Blue Cohosh by Herbal Terra

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 16, 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: a liquid extract of wildcrafted blue cohosh root. The extract is prepared in a menstruum (a liquid solvent used in herbal extraction).

There are no other active ingredients.

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 Blue Cohosh product and its label doesn't state a use — see Blue Cohosh'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 don't have effectiveness data on file for blue cohosh. The evidence for what it does and how well it works isn't established in our records.

The evidence, ingredient by ingredient Blue Cohosh

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.

Blue cohosh carries real safety concerns. It contains compounds that affect your heart, and serious adverse events have been linked to it.

You may experience stomach upset, diarrhea, cramping, nausea, vomiting, chest pain, or changes in blood pressure and blood sugar. The safety data strongly advises against use in pregnancy—blue cohosh may trigger uterine contractions and has been linked to serious harm in newborns, including heart attacks, heart failure, and shock.

There isn't enough safety information to use it while breastfeeding either. If you're pregnant, planning to become pregnant, or breastfeeding, talk with your doctor or pharmacist before considering this product.

Side effects, ingredient by ingredient Blue Cohosh

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 — Blue Cohosh.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: diabetes medications.
  • For scale: 259 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.

Check your blood pressure medications and diabetes drugs before taking blue cohosh—both may become less effective. Also let your healthcare provider know if you use any nicotine products, since blue cohosh can strengthen their effects.

These are Moderate-severity interactions that need a conversation with your own doctor or pharmacist.

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.

Blue cohosh is a potent herb with documented risks, especially to your heart and if you're pregnant or breastfeeding. It may interfere with blood pressure and diabetes medications and boost nicotine effects.

If you're taking any prescription drugs, check them against this product with your doctor or pharmacist before you start.

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 Sep 25, 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 Blue Cohosh, straight from the product label.

Brand Herbal Terra
Barcode (UPC) 7429523572512
Net contents 4 Fluid Ounce(s); 120 mL
Market status On market
Date entered into DSLD Sep 25, 2020
DSLD ID 234023
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Sugar 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 Blue Cohosh by Herbal Terra, 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:
1 mL
Maximum serving Sizes:
1 mL
Servings per container
120
UPC/BARCODE
7429523572512
IngredientAmount% DV
wildcrafted Blue Cohosh (Caulophyllum thalictroides) dried root liquid extract970 mg--

Other ingredients: Menstruum

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.
Formulation

Origin of plant material: USA.

Manufactured in the USA in an FDA registered facility

Sugar free

Dried herb/menstruum ratio: 1:3 Expertly extracted Laboratory tested 330 mg/1 mL Premium product Super concentrated liquid herbal extract

Non GMO

No artificial ingredients, GMO, gluten, color additives, fillers, preservatives or binders. Natural Gluten Free

Suggested/Recommended/Usage/Directions

Direction Shake well before use. Adults take up to 30 drops (1 mL, one full squeeze of the dropper bulb) in 3-4 fl. oz of juice or water up to 4 times a day. We recommend to seek expert medical advice before taking this or any other herbal supplements.

FDA Disclaimer Statement

Notice This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure, or prevent any disease.

Precautions

Caution May have contraindications.

Do not use if you are allergic to any ingredients.

Consult a physician before using during pregnancy, if nursing, or if you are on any medications.

Keep out of the reach of children.

Storage

Store in a cool, dry, dark place.

Formula

Caulophyllum thalictroides

FDA Statement of Identity

Herbal Supplement

Seals/Symbols

Made in USA Made in an FDA registered facility Natural Gluten Free

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

See for yourself

Blue Cohosh by Herbal Terra label

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

Blue Cohosh 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 Blue Cohosh by Herbal Terra

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

Serving size1 mL Dosage formLiquid Servings per container120 Amounts shown are per serving.

Wildcrafted Blue Cohosh (Caulophyllum thalictroides) dried root liquid extract

Interacts with
259 drugs
970 mg per serving

Blue cohosh is a traditional herb historically used by Native Americans and midwives to bring on labor or menstruation, but it carries serious safety...

Wildcrafted Blue Cohosh (Caulophyllum thalictroides) dried root liquid extract monograph & interactions

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

Interaction report

Blue Cohosh by Herbal Terra Drug Interactions

Want to check YOUR meds against Blue Cohosh?

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
259Drugs
259 Moderate

Ingredients driving the most interactions

wildcrafted Blue Cohosh (Caulophyllum thalictroides) dried root liquid extract 259

Individual Drug Interactions

The ingredients in Blue Cohosh interact with 259 drugs. Click any drug to see the details.

1 of the 1 ingredient in Blue Cohosh interact with drugs. Each result below shows which ingredient is responsible. wildcrafted Blue Cohosh (Caulophyllum thalictroides) dried root liquid extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Blue Cohosh 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.

wildcrafted Blue Cohosh (Caulophyllum thalictroides) dried root liquid extract3 drug types · 259 drugs

Antidiabetes Drugs

There is some concern that blue cohosh might increase blood glucose levels. Theoretically, it might decrease the effectiveness of medicines used for diabetes. Some antidiabetes drugs include glimepiride (Amaryl), glyburide (DiaBeta, Glynase PresTab, Micronase), insulin, pioglitazone (Actos), rosiglitazone (Avandia), chlorpropamide (Diabinese), glipizide (Glucotrol), tolbutamide (Orinase), and others.

Likelihood Possible Evidence D
Antihypertensive Drugs

Constituents in blue cohosh might increase blood pressure by causing coronary vasoconstriction. Theoretically, concomitant use might decrease the effectiveness of drugs used for angina and high blood pressure; use with caution. Some antihypertensive drugs include captopril (Capoten), enalapril (Vasotec), losartan (Cozaar), valsartan (Diovan), diltiazem (Cardizem), Amlodipine (Norvasc), hydrochlorothiazide (HydroDiuril), furosemide (Lasix), and many others.

Likelihood Possible Evidence D
Nicotine

Blue cohosh can increase the effects of nicotine.

Likelihood Possible Evidence D
wildcrafted Blue Cohosh (Caulophyllum thalictroides) dried root liquid extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Blue Cohosh, from the product label.

Herbal Terra

See all Herbal Terra products
Name
Herbal Terra
Pharmacist Counseling Corner

Blue Cohosh by Herbal Terra: Common Questions

Does Blue Cohosh by Herbal Terra interact with any medications?
Yes. Based on its ingredients, Blue Cohosh has a known interaction with 259 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Blue Cohosh 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 blue cohosh while I'm pregnant or breastfeeding?
No—the safety data says it's likely unsafe in pregnancy because it may trigger uterine contractions and has been tied to serious newborn heart problems including heart attacks and shock. There isn't enough safety information for breastfeeding either. Talk with your doctor or pharmacist before using it if you're pregnant, planning to get pregnant, or nursing.
What are the side effects I might experience?
Blue cohosh can cause stomach upset including diarrhea and cramping, nausea, vomiting, mouth and throat irritation, chest pain, and changes in blood pressure and blood sugar. Because it affects your heart, these effects warrant caution.
Will blue cohosh work for [specific use]?
We don't have effectiveness data on file for blue cohosh in our records, so we can't tell you what it's intended to do or how well it works. Your doctor or pharmacist can help you understand what the evidence says.
I take blood pressure medication—is this safe for me?
Not without checking first. Blue cohosh may raise your blood pressure and reduce how well your blood pressure drugs work. Talk with your doctor or pharmacist about your specific medications before starting this product.
I'm on insulin. Can I use this?
Blue cohosh may increase blood sugar and interfere with diabetes medications including insulin. Check with your doctor or pharmacist before taking it.

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

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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.

Blue Cohosh label
Go deeper

The Full Monographs Behind Blue Cohosh’s Ingredients

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

Herb & supplement monograph

Blue Cohosh

Interacts with 259 drugs

Blue cohosh is a traditional herb historically used by Native Americans and midwives to bring on labor or menstruation, but it carries serious safety concerns, especially for the heart and d...

Read the full Blue Cohosh monograph →
Sources

Sources & How We Checked

Blue Cohosh'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 16 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.

Blue Cohosh 16 references
  1. Jones TK, Lawson BM. Profound neonatal congestive heart failure caused by maternal consumption of blue cohosh herbal medication. J Pediatr 1998;132:550-2. PubMed
  2. McFarlin BL, Gibson MH, O'Rear J, Harman P. A national survey of herbal preparation use by nurse-midwives for labor stimulation. Review of the literature and recommendations for practice. J Nurse Midwifery 1999;44:205-16. PubMed
  3. Wright IM. Neonatal effects of maternal consumption of blue cohosh. J Pediatr 1999;134:384-5. DOI
  4. Edmunds J. Blue cohosh and newborn myocardial infarction? Midwifery Today Int Midwife 1999;52:34-5.
  5. Fetrow CW, Avila JR. Professional's Handbook of Complementary & Alternative Medicines. 1st ed. Springhouse, PA: Springhouse Corp., 1999.
  6. Irikura B, Kennelly E. American Health Consultants. Blue Cohosh: a word of caution. 1999. Available at: http://www.ahcmedia.com/articles/50424-blue-cohosh-a-word-of-caution.
  7. Gunn TR, Wright IM. The use of black and blue cohosh in labour. N Z Med J 1996;109:410-1.
  8. Baillie N, Rasmussen P. Black and blue cohosh in labour. N Z Med J 1997;110:20-1.
  9. Finkel RS, Zarlengo KM. Blue cohosh and perinatal stroke. N Engl J Med 2004;351:302-3. PubMed
  10. Kennelly, E. J., Flynn, T. J., Mazzola, E. P., Roach, J. A., McCloud, T. G., Danford, D. E., and Betz, J. M. Detecting potential teratogenic alkaloids from blue cohosh rhizomes using an in vitro rat embryo culture. J.Nat.Prod. 1999;62(10):1385-1389. PubMed
  11. Rao, R. B. and Hoffman, R. S. Nicotinic toxicity from tincture of blue cohosh (Caulophyllum thalictroides) used as an abortifacient. Vet.Hum.Toxicol. 2002;44(4):221-222.
  12. Gunn, T. R. and Wright, I. M. The use of black and blue cohosh in labour. N.Z Med J 10-25-1996;109(1032):410-411.
  13. Scott, C. C. and Chen, K. K. The pharmacological action of N-methylcytisine. The Journal of Pharmacology and Experimental Therapuetics 1943;79:334-339. DOI
  14. Low, D. T. Blue cohosh and neonatal myocardial toxicity. Journal of the American Herbalists Guild 2001;2(2):9-10.
  15. Dugoua JJ, Perri D, Seely D, et al. Safety and efficacy of blue cohosh (Caulophyllum thalictroides) during pregnancy and lactation. Can J Clin Pharmacol. 2008;15(1):e66-73.
  16. Sirtori CR, Triolo M, Bosisio R, et al. Hypocholesterolaemic effects of lupin protein and pea protein/fibre combinations in moderately hypercholesterolaemic individuals. Br J Nutr 2012;107:1176-83. PubMed

See these in context on the Blue Cohosh 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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