Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Yarrow Flowers 325 mg Ingredients & Drug Interactions

by Nature's Way

Yarrow Flowers 325 mg label
See full label image
Capsule 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 Yarrow Flowers 325 mg 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

Yarrow Flowers 325 mg is a dietary supplement by Nature's Way with 1 active ingredient. Its ingredients are commonly taken for wounds and minor bleeding, digestive upset and cramping, colds, flu, and fever.Based on those ingredients, 1 medication has a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Yarrow. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Yarrow Flowers 325 mg by Nature's Way

Ask about any prescription or over-the-counter medication and we check it for interactions with Yarrow Flowers 325 mg by Nature's Way — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Yarrow Flowers 325 mg by Nature's Way

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: 325 mg of yarrow (also called milfoil), a flowering plant used in traditional herbalism. The capsule itself is plant-derived, and the inactive ingredients are magnesium stearate (a lubricant).

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 Yarrow product and its label doesn't state a use — see Yarrow'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 we hold doesn't establish that yarrow works reliably for any of the uses it's traditionally been marketed for — tonsillitis, wound healing, atopic dermatitis (eczema), dysmenorrhea (painful periods), or vaginal yeast infection. The data rates all of these as insufficient reliable evidence.

That doesn't mean it doesn't work; it means the clinical trials we have aren't strong enough to prove it either way.

The evidence, ingredient by ingredient Yarrow

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.

When taken by mouth or inserted vaginally, yarrow is generally well tolerated. Topically (on skin), it can cause contact dermatitis, allergic reactions, or urticaria (hives) because of compounds called sesquiterpene lactones, and it's been reported to cause photo-allergic reactions and airborne contact dermatitis.

In one case, handling yarrow flowers triggered rhinitis and asthma in an individual. Yarrow is traditionally avoided in pregnancy because it may affect the uterus — the safety data advise against use.

There isn't enough safety information to support use while breastfeeding either, so it's best avoided.

Side effects, ingredient by ingredient Yarrow

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 — Yarrow.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: lithium.
  • 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 take lithium, check with your pharmacist or doctor before starting yarrow — it may increase lithium levels and side effects (Moderate severity). No other medication interactions are documented in our data for this ingredient.

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.

Yarrow is sometimes tried for wound healing or period pain, but we don't have reliable evidence it works for those purposes. If you take lithium, don't start this without checking with your pharmacist or doctor — it may raise your lithium levels.

Talk to your pharmacist before taking it, especially if you're pregnant or 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 Sep 21, 2017.

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 Yarrow Flowers 325 mg, straight from the product label.

Brand Nature's Way
Barcode (UPC) 033674141656
Net contents 100 Vegetarian Capsule(s)
Market status On market
Date entered into DSLD Sep 21, 2017
DSLD ID 78550
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other
Intended target group(s) Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy 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 Yarrow Flowers 325 mg by Nature's Way, 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:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
50
UPC/BARCODE
033674141656
IngredientAmount% DV
Yarrow650 mg--

Other ingredients: plant-derived Capsule, Magnesium Stearate

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)

Health through the power of nature, that’s what it means to Trust the Leaf.

2015 Nature’s Way Brands, LLC

General Statements

Yarrow (Achillea millefolium) is a traditional herbal remedy. Our Yarrow is carefully tested and produced to superior quality standards.

Premium herbal

Precautions

Keep out of reach of children.

Safety sealed with printed outer shrinkwrap and inner seal. Do not use if either is broken or missing.

If pregnant, nursing or taking any medications consult a healthcare professional before use.

Formulation

Gluten free. No sugar, salt, yeast, wheat, soy, corn, dairy products, artificial colors, flavors or preservatives.

Vegetarian

Non GMO

Seals/Symbols

Vegetarian

Non GMO Project Verified Nongmoproject.org

Certified Authentic Tru-ID

General

LN14165.A01 BLK8390A

FDA Statement of Identity

Dietary Supplement

Suggested/Recommended/Usage/Directions

Recommendation: Take 2 capsules three times daily.

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

See for yourself

Yarrow Flowers 325 mg by Nature's Way label

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

Yarrow Flowers 325 mg 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 Yarrow Flowers 325 mg by Nature's Way

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

Serving size2 Capsule(s) Dosage formCapsule Servings per container50 Amounts shown are per serving.

Yarrow

Interacts with
1 drug
650 mg per serving

Yarrow is a traditional herb long used for wounds, digestive complaints, and colds, but high-quality human studies are very limited, so its benefits a...

Yarrow monograph & interactions

Other (inactive) ingredients: Plant-derived Capsule, Magnesium Stearate. These complete the product’s ingredient list but are not active constituents.

Interaction report

Yarrow Flowers 325 mg by Nature's Way Drug Interactions

Want to check YOUR meds against Yarrow Flowers 325 mg?

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 Moderate

Ingredients driving the most interactions

Yarrow 1

Individual Drug Interactions

The ingredients in Yarrow Flowers 325 mg interact with 1 drug. Click any drug to see the details.

1 of the 1 ingredient in Yarrow Flowers 325 mg interact with drugs. Each result below shows which ingredient is responsible. Yarrow

Each ingredient & the kinds of drugs it affects

For each ingredient in Yarrow Flowers 325 mg 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.

Yarrow1 drug type · 1 drug

Lithium

Theoretically, taking yarrow with lithium might increase the levels and adverse effects of lithium.
Animal research shows that yarrow has diuretic activity. Theoretically, due to these potential diuretic effects, yarrow might reduce excretion and increase levels of lithium. The dose of lithium might need to be decreased.

Likelihood Probable Evidence D
Yarrow full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Yarrow Flowers 325 mg, from the product label.

Nature's Way

See all Nature's Way products
Name
Nature's Way Brands, LLC
City
Green Bay
State
WI
ZipCode
54311
Phone Number
1-800-962-8873
Web Address
naturesway.com
Pharmacist Counseling Corner

Yarrow Flowers 325 mg by Nature's Way: Common Questions

Does Yarrow Flowers 325 mg by Nature's Way interact with any medications?
Yes. Based on its ingredients, Yarrow Flowers 325 mg has a known interaction with 1 medication. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Yarrow Flowers 325 mg 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?
No. Yarrow is traditionally avoided in pregnancy because it may affect the uterus. The safety data advise against it — talk to your OB or midwife before considering any herbal supplement in pregnancy.
Is it safe while breastfeeding?
There isn't enough safety information to know, so it's best avoided while breastfeeding. Talk with your doctor or pharmacist if you're considering it.
Does yarrow actually help with wound healing or period pain?
Those are traditional uses, but we don't have reliable clinical evidence that it works for either one. The data rates both as insufficient evidence.
Can yarrow cause side effects when I swallow it?
When taken by mouth, yarrow is generally well tolerated. If you apply it to skin, it can cause dermatitis or allergic reactions in some people.
Why does the label say 'plant-derived capsule'?
That just means the capsule shell is made from plant material rather than gelatin, so it's suitable for vegan or vegetarian diets. It's the same function — it holds the yarrow powder inside.

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

Not sure if Yarrow Flowers 325 mg 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.

Yarrow Flowers 325 mg label
Go deeper

The Full Monographs Behind Yarrow Flowers 325 mg’s Ingredients

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

Herb & supplement monograph

Yarrow

Interacts with 1 drug

Yarrow is a traditional herb long used for wounds, digestive complaints, and colds, but high-quality human studies are very limited, so its benefits are not well proven. It is generally used...

Read the full Yarrow monograph →
Sources

Sources & How We Checked

Yarrow Flowers 325 mg'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.

Yarrow 8 references
  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. Uter, W., Nohle, M., Randerath, B., and Schwanitz, H. J. Occupational contact urticaria and late-phase bronchial asthma caused by compositae pollen in a florist. Am J Contact Dermat. 2001;12(3):182-184. DOI
  3. Schempp, C. M., Schopf, E., and Simon, J. C. [Plant-induced toxic and allergic dermatitis (phytodermatitis)]. Hautarzt 2002;53(2):93-97.
  4. 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
  5. Becker LC, Bergfeld WF, Belsito DV, et al. Safety assessment of Achillea millefolium as used in cosmetics. Int J Toxicol. 2016;35(3 suppl):5S-15S.
  6. Zakeri S, Esmaeilzadeh S, Gorji N, Memariani Z, Moeini R, Bijani A. The effect of Achillea millefolium L. on vulvovaginal candidiasis compared with clotrimazole: A randomized controlled trial. Complement Ther Med. 2020;52:102483. PubMed
  7. de Souza P, Crestani S, da Silva Rde C, et al. Involvement of bradykinin and prostaglandins in the diuretic effects of Achillea millefolium L. (Asteraceae). J Ethnopharmacol. 2013 Aug 26;149(1):157-61. PubMed
  8. Miranzadeh S, Adib-Hajbaghery M, Soleymanpoor L, Ehsani M. Effect of adding the herb Achillea millefolium on mouthwash on chemotherapy induced oral mucositis in cancer patients: A double-blind randomized controlled trial. Eur J Oncol Nurs. 2015;19(3):207- PubMed

See these in context on the Yarrow 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

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team