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Dietary supplement

Yarrow Flowers Ingredients & Drug Interactions

by Gaia Herbs

Yarrow Flowers 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 Yarrow Flowers 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 is a dietary supplement by Gaia Herbs 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 flowers 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 Yarrow Flowers by Gaia Herbs

Ask about any prescription or over-the-counter medication and we check it for interactions with Yarrow Flowers by Gaia Herbs — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Yarrow Flowers by Gaia Herbs

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

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 1 active ingredient.

This product contains one active ingredient: yarrow flowers extract. Yarrow has a long history in herbal medicine, traditionally used for a variety of purposes, though the scientific evidence for most of those uses isn't yet well established.

There are no other inactive ingredients listed in this formulation.

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 on yarrow flowers doesn't establish reliable benefit for the conditions it's traditionally used for — tonsillitis, wound healing, eczema, period pain, yeast infections, and others. That doesn't mean it doesn't work; it means the quality and volume of clinical study aren't there yet to prove it does.

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 applied vaginally, yarrow is generally well tolerated. Topically (on skin), it carries more risk: it can trigger allergic or irritant skin reactions, including rash or hives, and in sensitive people it's been known to cause sun-sensitivity dermatitis or even airborne contact reactions when handling the flowers.

One trial participant reported worsening acne after vaginal use. Yarrow is not recommended in pregnancy — traditional use has flagged a potential effect on the uterus, and the safety data don't support it.

Similarly, there isn't enough safety information to recommend it while breastfeeding. If you're pregnant or nursing, talk with your doctor or pharmacist before use.

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 before starting this product — yarrow may raise lithium levels and require a dose adjustment. No other medications have documented interactions with the ingredient we could check.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Yarrow flowers extract is generally well tolerated when taken by mouth, but the evidence for its traditional uses isn't established yet. The main caution is if you take lithium — you'll need to check with your pharmacist first.

Avoid it in pregnancy and breastfeeding. If you have allergies or sensitive skin, be aware topical use carries a higher risk of skin reactions.

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 Dec 21, 2012.

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, straight from the product label.

Brand Gaia Herbs
Barcode (UPC) 751063312820
Net contents 4 fl. Oz.; 120 mL
Market status On market
Date entered into DSLD Dec 21, 2012
DSLD ID 16550
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 Yarrow Flowers by Gaia Herbs, 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:
1.33 mL
Servings per container
120
UPC/BARCODE
751063312820
IngredientAmount% DV
Yarrow flowers extract0 NP--

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

Liquid Herbal Extract

333 mg/ml herb equivalency

FDA Statement of Identity

DIETARY SUPPLEMENT

General

[02] 1093-0510

Suggested/Recommended/Usage/Directions

Take 30-40 drops of extract in a small amount of water 3-4 times daily between meals. Shake well before using.

Precautions

Not to be used during pregnancy or lactation. If you have a medical condition or take pharmaceutical drugs, please consult with your doctor before use.

Keep away from children.

Use only as directed on label. Safety sealed for your protection.

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

See for yourself

Yarrow Flowers by Gaia Herbs label

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

Yarrow Flowers 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 by Gaia Herbs

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.

Yarrow flowers extract

Interacts with
1 drug
0 NP 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 flowers extract monograph & interactions
Interaction report

Yarrow Flowers by Gaia Herbs Drug Interactions

Want to check YOUR meds against Yarrow Flowers?

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 flowers extract 1

Individual Drug Interactions

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

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

Each ingredient & the kinds of drugs it affects

For each ingredient in Yarrow Flowers 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.

Yarrow flowers extract1 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 flowers extract full monograph & interactions
The maker

Brand information

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

Gaia Herbs

See all Gaia Herbs products
Web Address
GaiaHerbs.com
Pharmacist Counseling Corner

Yarrow Flowers by Gaia Herbs: Common Questions

Does Yarrow Flowers by Gaia Herbs interact with any medications?
Yes. Based on its ingredients, Yarrow Flowers 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 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 yarrow if I'm pregnant?
No — yarrow is traditionally avoided in pregnancy because it may affect the uterus, and the safety data don't support its use. Please talk with your doctor or pharmacist before considering it.
Is yarrow safe to use while breastfeeding?
There isn't enough safety information to recommend yarrow while breastfeeding. Talk with your pharmacist or doctor for personalized advice.
What side effects does yarrow cause?
When taken by mouth or used vaginally, yarrow is generally well tolerated with no common side effects reported. Topical use on skin is riskier — it can cause allergic or irritant rash, hives, sun-sensitivity reactions, and in rare cases respiratory symptoms when handling the flowers. One person in a trial reported worsening acne after vaginal use.
Does yarrow work for wound healing or skin conditions?
Yarrow has been traditionally used for those purposes, but we don't yet have reliable evidence to say whether it actually works. More research is needed.
Can yarrow cause allergic reactions?
Yes — allergic reactions can happen, especially with topical use on skin. If you have a history of allergies, pay close attention when you first use 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.

Yarrow Flowers label
Go deeper

The Full Monographs Behind Yarrow Flowers’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'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

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