Herb & supplement monograph

Field Scabious Drug Interactions, Uses, Effectiveness, Safety & More

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Reviewed by licensed pharmacists Sourced from Natural Medicines
Interaction report

Drugs that interact with Field Scabious

0 medications have a known interaction with Field Scabious, graded by severity. Select any drug for the full evidence-based detail.

We don’t currently list any known drug interactions for Field Scabious. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.

Read The List Like a Pharmacist

What Severity, Likelihood & Evidence Mean

Severity — How Serious It Can Be

  • Major. Clinically significant; generally best avoided, or used only under direct professional supervision.
  • Moderate. May need monitoring, a dose adjustment, or separating the times you take each one.
  • Minor. Generally not clinically significant, but still worth noting and mentioning to your pharmacist.
  • No known interaction. Checked against our sources with nothing documented — not the same as proven safety.

Likelihood — How Well It’s Documented

  • Likely. Well-controlled human studies have demonstrated the likely existence of this interaction
  • Probable. Interaction has not been documented in well-controlled studies, however, the interaction has been demonstrated in some small human studies or in controlled animal studies in conjunction with multiple case reports.
  • Possible. Interaction has been documented in animal or in lab research, or the interaction has been documented in humans but is limited to case reports or conflicting clinical research exists
  • Unlikely. Interaction has been demonstrated in animal or in lab research but has been shown not to occur in humans.

Where This Data Comes From

  • Interaction records are evidence-graded and sourced from the Natural Medicines database (TRC Healthcare), the same reference used by pharmacists and hospitals.
  • Each drug listed above links to the full report for that exact Field Scabious combination — clinical detail, likelihood, evidence level, and citations.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Monograph

Field Scabious: Uses, Safety & Side Effects

The bottom line

Field Scabious is a wild-growing herb used in European folk medicine, mostly for skin problems, coughs, and sore throats. There is very little modern scientific research to confirm any of these uses, so it should be viewed as a traditional remedy rather than a proven treatment. Talk to your pharmacist or doctor before using it, especially if you are pregnant, breastfeeding, or taking other medicines.

Scientific name
Knautia arvensis
Family
Caprifoliaceae
Part used
Aerial parts (flowers, leaves, and stems), occasionally the root
Common forms
Tea (infusion), tincture, dried herb, topical washes or compresses
People commonly use it for
  • Skin conditions like eczema and minor wounds
  • Cough and chest complaints
  • Sore throat
  • Mild digestive upset
  • Traditional 'blood cleansing' remedies

Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.

Safety at a glance
OverallLimited data

Modern safety data are very limited, so use cautiously and under guidance.

PregnancyInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full pregnancy detail
BreastfeedingInsufficient reliable information

Insufficient reliable information available; avoid using.

Read the full breastfeeding detail

Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

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Overview

Field Scabious (Knautia arvensis) is a wild flowering plant native to Europe and parts of Asia, and it also grows in North America. It produces soft, pincushion-like lilac or pale purple flowers and is often found in meadows, fields, and along roadsides.

The plant has a long history in European folk medicine. People traditionally used the leaves, flowers, and sometimes the root to make teas, tinctures, and skin washes. It is closely related to other plants historically called "scabious," a name that hints at its old reputation for treating itchy skin conditions.

Today it is considered a minor, mostly traditional herb. It is not a mainstream supplement, and you are far more likely to find it in herbalist references than on pharmacy shelves.

How it works

Like many related plants, Field Scabious contains compounds such as tannins, flavonoids, and other plant chemicals. In laboratory studies, plants in this family have shown some antioxidant and mild antimicrobial activity, which is one reason for their traditional use on the skin and throat.

Tannins can have a drying, astringent effect, which may explain why folk traditions used it on weepy skin or as a gargle. However, these mechanisms are based mostly on test-tube and limited animal research, not on proper human studies.

In short, we do not have a clear, proven picture of how Field Scabious affects the human body.

Effectiveness

Does Field Scabious work?

Evidence overview · 2 uses evaluated
2 Insufficient evidence
How to read these evidence grades

Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.

1EffectiveStrong, consistent evidence it works.
2Likely EffectiveGood evidence, though not yet conclusive.
3Possibly EffectiveSome evidence suggests a benefit.
4Possibly IneffectiveSome evidence it may not help.
5Likely IneffectiveFairly strong evidence it doesn’t help.
6IneffectiveStrong evidence it doesn’t work.
7Insufficient Reliable Evidence to RateToo little research to say either way.

For Field Scabious, current evidence isn’t strong enough to rate any specific use. The conditions it has been studied for are listed below.

Also studied for 2 conditions — evidence insufficient to rate
Insufficient Reliable Evidence To Rate Pharyngitis
Rating & evidence shown verbatim from Natural Medicines

Although there has been interest in using oral field scabious for sore throat, there is insufficient reliable information about the clinical effects of field scabious for this purpose.

Insufficient Reliable Evidence To Rate Wound healing
Rating & evidence shown verbatim from Natural Medicines

Although there has been interest in using topical field scabious for wound healing, there is insufficient reliable information about the clinical effects of field scabious for this purpose.

Source & disclaimer. Effectiveness ratings and evidence summaries are provided by Natural Medicines (Therapeutic Research Center) and shown as licensed. Where Natural Medicines hasn’t rated a use, HelloPharmacist’s pharmacists may add their own reviewed rating and evidence (each such entry is labeled). This is educational information, not medical advice — talk with your pharmacist or doctor before starting, stopping, or changing a supplement.

Safety & precautions

There is very little modern safety information about Field Scabious. It has been consumed as a folk remedy for a long time, but a history of use is not the same as proof of safety.

Be cautious if you have allergies to related plants, as cross-reactions are possible. Stop using it and seek care if you develop a rash, swelling, or trouble breathing.

Pregnancy and breastfeeding: Because there is no reliable safety data, it is best to avoid Field Scabious if you are pregnant or breastfeeding. Children, older adults, and people with chronic illnesses should also avoid it unless a healthcare professional advises otherwise. Always tell your pharmacist or doctor about any herbal products you use.

Side effects

Specific side effects of Field Scabious have not been well studied. As with many herbal teas and tinctures, possible effects could include mild stomach upset or, in sensitive people, an allergic skin reaction when used topically.

Rare but serious allergic reactions are always possible with any plant product. Seek immediate medical help if you notice hives, swelling of the lips or throat, or difficulty breathing.

Dosing

There is no established, standardized dose for Field Scabious. It has traditionally been prepared as a tea from the dried aerial parts or as a tincture, but reliable dosing guidelines from clinical research do not exist.

If you choose to use a commercial product, follow the directions on the label and do not exceed them. Because quality and strength vary between products, it is wise to check with a pharmacist before starting, and to begin with a small amount to see how you tolerate it.

Pregnancy & Breastfeeding

Field Scabious & Pregnancy

Insufficient reliable information

Insufficient reliable information available; avoid using.

Field Scabious & Breastfeeding

Insufficient reliable information

Insufficient reliable information available; avoid using.

DISCLAIMER: This tool is intended for informational purposes only, and should not be interpreted as specific medical advice. Patients should consult with a qualified healthcare provider before making decisions about therapies and/or health conditions.

© 2026 Therapeutic Research Center

Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center

References & further reading

The 1 sources that drive our Field Scabious monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing.

  1. Using Dietary Supplements Wisely — NIH NCCIH Source
Keep reading

This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.

Pharmacist Counseling Corner

Field Scabious: Common Questions

What is Field Scabious used for, and does it work?
People use Field Scabious for a range of reasons, but according to the Natural Medicines database the current clinical evidence is insufficient to confirm it works for the specific conditions it has been studied for. See the graded list on this page, and talk to your pharmacist or doctor before relying on it for any condition.
Does Field Scabious interact with prescription medications?
We do not currently list any known drug interactions for Field Scabious. This does not guarantee that none exist, so always confirm with your pharmacist before combining it with your medications.
How are Field Scabious interactions rated?
Each interaction is graded major, moderate, or minor based on how clinically significant it is and the strength of the evidence behind it. Major interactions are the most serious and are best avoided, or used only under close professional supervision.
Is it safe to take Field Scabious with my medications?
It depends on the specific medication. Some combinations are fine, while others call for monitoring, timing changes, or should be avoided. Check your exact drug above and confirm with your pharmacist or doctor before starting, stopping, or changing anything.
Where does this Field Scabious interaction information come from?
Our interaction data is built on the Natural Medicines database — an evidence-graded reference for vitamins, herbs, and supplements — and is reviewed by licensed HelloPharmacist pharmacists, who may add clinical context.
What is Field Scabious used for?
It is a traditional European herb used mostly for skin conditions, coughs, sore throats, and minor digestive complaints. These uses come from folk medicine and are not backed by strong scientific evidence.
Is Field Scabious safe to take?
Modern safety data are very limited. It has a long history of folk use, but because we don't have good research, it should be used cautiously and ideally after checking with a pharmacist or doctor.
Can I use Field Scabious if I'm pregnant or breastfeeding?
It is best to avoid it. There is not enough safety information to know whether it is safe during pregnancy or breastfeeding.
How is Field Scabious usually taken?
Traditionally it is made into a tea or tincture from the dried flowers and leaves, or used as a skin wash. There is no standardized dose, so follow the product label and use it conservatively.

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

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