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Dietary supplement

Yarrow Ingredients & Drug Interactions

by New Sun

Yarrow 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 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 is a dietary supplement by New Sun 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.

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Check Your Meds Against Yarrow by New Sun

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

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HelloPharmacist Scorecard of Yarrow by New Sun

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: yarrow, the dried herb traditionally used in herbal medicine. The capsule itself is made from gelatin.

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 for yarrow isn't established in our data. It's been studied for tonsillitis, wound healing, eczema, menstrual cramps (dysmenorrhea), and yeast infections, but the research behind each of those uses rates as insufficient reliable evidence — meaning the studies either aren't robust enough or weren't done at all to draw solid conclusions about whether it actually works.

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 used in the vagina, yarrow seems to be well tolerated in most people. Topical use (applied to skin) is where side effects show up most often: allergic skin rashes, hives, and sensitivity to sunlight are the main ones, especially in people with sesquiterpene lactone sensitivities.

One person in a trial reported worsening acne after vaginal use, and there's a case of someone handling the fresh flowers and developing runny nose and asthma. Yarrow should not be used in pregnancy — it's traditionally been avoided because it may affect the uterus.

There isn't enough safety data to use it while breastfeeding either. Human safety data overall are limited, and allergic reactions can happen, so caution is warranted.

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, yarrow could increase its levels and side effects — a Moderate-severity interaction. Check with your doctor or pharmacist before adding this supplement.

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 a single-herb supplement with limited evidence for its traditional uses. If you take lithium for mood stabilization, do not start this without checking with your prescriber first — it may raise your lithium levels.

For anyone with a history of allergic skin reactions or sensitivity to plants, be cautious. Talk to your pharmacist before using it.

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 Aug 24, 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, straight from the product label.

Brand New Sun
Barcode (UPC) 49-6
Net contents 100 Capsule(s)
Market status On market
Date entered into DSLD Aug 24, 2012
DSLD ID 11691
Product type Botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
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 by New Sun, 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
49-6
IngredientAmount% DV
Yarrow800 mg--

Other ingredients: Gelatin

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.
Suggested/Recommended/Usage/Directions

Recommendation: As a dietary supplement, take two capsules with meals two or three times daily.

Precautions

Do not use if safety seal is missing or broken.

Keep out of reach of children.

Warning: Do not take if pregnant. If you are nursing, taking any medications, or experiencing health issues, consult your doctor before use.

Storage

Store in a cool, dry place.

FDA Disclaimer Statement

This product is not intended to diagnose, treat, cure, or prevent any disease.

General

Product No. 49-6 V 2.0

FDA Statement of Identity

Dietary Supplement

Formulation

This product does not contain: yeast, corn, wheat, egg, starch, preservatives, artificial coloring or sweeteners.

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

See for yourself

Yarrow by New Sun label

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

Yarrow 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 by New Sun

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
800 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: Gelatin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Yarrow by New Sun Drug Interactions

Want to check YOUR meds against Yarrow?

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 interact with 1 drug. Click any drug to see the details.

1 of the 1 ingredient in Yarrow 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 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, from the product label.

New Sun

See all New Sun products
Name
New Sun
City
Hendersonville
State
NC
ZipCode
28792
Phone Number
1-800-544-0777
Web Address
www.newsun.net
Pharmacist Counseling Corner

Yarrow by New Sun: Common Questions

Does Yarrow by New Sun interact with any medications?
Yes. Based on its ingredients, Yarrow 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 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 or breastfeeding?
No — yarrow should not be used in pregnancy because it may affect the uterus. There also isn't enough safety information to use it while breastfeeding. Talk with your doctor or pharmacist if you're in either situation.
Does yarrow actually work for wound healing or eczema?
The research behind yarrow for those uses isn't strong enough to say whether it works. The evidence in our data rates as insufficient for both wound healing and eczema, as well as for menstrual cramps, sore throat, and yeast infections.
What side effects might I get from taking yarrow by mouth?
When taken orally, yarrow seems to be well tolerated — most people don't report problems. Skin reactions are the main side effect, and those happen more often with topical use. Allergic reactions are possible, though, so if you have a history of plant sensitivities, be cautious.
Why is there gelatin in the capsule?
Gelatin is an inactive ingredient — a binder and capsule material that holds the yarrow powder together. It's not the active part of the supplement.
Can yarrow cause a skin rash?
Yes, especially with topical use. Yarrow can cause allergic rashes, hives, and sun-sensitivity reactions in some people, particularly if you're allergic to compounds called sesquiterpene lactones found in the plant.

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

Not sure if Yarrow 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.

Yarrow label
Go deeper

The Full Monographs Behind Yarrow’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'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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