Herb & supplement monograph

Parsley Piert Drug Interactions, Uses, Safety & More

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Interaction report

Drugs that interact with Parsley Piert

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

We don’t currently list any known drug interactions for Parsley Piert. 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 Parsley Piert combination — clinical detail, likelihood, evidence level, and citations.
  • Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Monograph

Parsley Piert: Uses, Safety & Side Effects

The bottom line

Parsley piert is a small traditional herb used mainly in folk medicine for kidney and bladder problems, especially stones. There is very little modern scientific research to confirm it works for any condition, so claims rest mostly on long-standing traditional use. Talk to your pharmacist or doctor before using it, and never use it to replace proven treatment for kidney stones or urinary problems.

Scientific name
Aphanes arvensis
Family
Rosaceae
Part used
Above-ground parts (whole herb)
Common forms
Tea (infusion), liquid extract/tincture, dried herb
People commonly use it for
  • Kidney and bladder stones
  • Urinary tract complaints
  • Mild fluid retention
  • Bladder irritation
  • General 'kidney cleansing' tonic

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

Safety at a glance
OverallUse caution

Generally used in small amounts traditionally, but it is poorly studied in modern research.

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

Parsley piert is a small, low-growing plant despite its name, it is not related to true parsley. It is a member of the rose family and grows as a tiny weed in fields, sandy soils, and dry grassy areas across Europe and parts of North America.

The whole above-ground part of the plant has long been used in traditional herbal medicine, mostly in Britain and Europe. Folk healers used it as a remedy for kidney and bladder problems. Today it is sometimes found as a dried herb for tea, or as a liquid extract or tincture, often marketed as a 'kidney' or urinary tonic.

Uses & effectiveness

People have traditionally used parsley piert for kidney stones, bladder stones, urinary tract discomfort, and fluid retention. It was thought to act as a 'stone-breaking' herb and a mild diuretic (something that increases urine flow).

It is important to be honest: there is very little modern scientific evidence for any of these uses. Most of what is claimed comes from old herbal texts and tradition rather than well-designed human studies. We do not have good clinical trials showing that parsley piert dissolves stones, prevents them, or treats urinary problems.

Because of this, parsley piert should not be relied on to treat kidney stones, infections, or any medical condition. These problems need proper medical evaluation and treatment.

How it works

The way parsley piert might work in the body is not well understood. Like many plants in the rose family, it contains tannins and other plant compounds that may have mild astringent and diuretic-like effects.

Traditionally it was believed to increase urine flow and soothe the urinary tract, which is why it was used for stones and bladder irritation. However, these ideas are based mainly on traditional use and basic plant chemistry, not on solid laboratory or human research. There is no reliable evidence identifying a proven active ingredient or mechanism.

Safety & precautions

Parsley piert has a long history of traditional use and is generally taken in small amounts, but it has not been carefully studied for safety in modern research. This means unexpected effects cannot be ruled out.

People with kidney disease, a history of kidney stones, or heart or blood pressure conditions should be especially careful, since herbs that affect urine flow may not be appropriate for them. Always check with your pharmacist or doctor first.

Pregnancy and breastfeeding: There is not enough information to consider parsley piert safe. To be cautious, it should be avoided during pregnancy and while breastfeeding.

Do not use parsley piert as a substitute for medical care. If you have signs of a kidney stone or urinary infection such as severe pain, fever, blood in the urine, or trouble urinating, seek medical attention.

Side effects

Because parsley piert is poorly studied, its full side effect profile is not well known. As with many herbs, possible effects could include mild stomach upset or an allergic reaction in sensitive people.

Herbs that increase urine flow may cause more frequent urination or, in some cases, changes in fluid and salt balance if used heavily. Stop using it and seek care if you notice a rash, swelling, trouble breathing, or any other concerning symptoms.

Dosing

There is no established, standardized dose of parsley piert. Traditional use involved making a tea from the dried herb or taking a liquid extract, but reliable dosing information from research is lacking.

If you choose to use a product, follow the directions on the label and do not exceed them. Because quality and strength can vary between products, it is best to speak with a pharmacist or doctor before starting, especially if you have a health condition or take other medicines.

Pregnancy & Breastfeeding

Parsley Piert & Pregnancy

Insufficient reliable information

Insufficient reliable information available; avoid using.

Parsley Piert & 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 2 sources that drive our Parsley Piert monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing.

  1. Herbs at a Glance — NIH National Center for Complementary and Integrative Health Source
  2. Herbs and Supplements — MedlinePlus (U.S. National Library of Medicine) 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

Parsley Piert: Common Questions

Does Parsley Piert interact with prescription medications?
We do not currently list any known drug interactions for Parsley Piert. This does not guarantee that none exist, so always confirm with your pharmacist before combining it with your medications.
How are Parsley Piert 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 Parsley Piert 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 Parsley Piert 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 Parsley Piert used for?
It is used in traditional herbal medicine mainly for kidney and bladder stones and urinary complaints, but modern scientific evidence supporting these uses is very limited.
Is Parsley Piert the same as parsley?
No. Despite the name, Parsley Piert is a different plant in the rose family and is not related to the culinary herb parsley.
Is Parsley Piert safe to take?
It has a history of traditional use but has not been well studied in modern research, so its safety is uncertain. Check with your pharmacist or doctor before using it.
Can I use Parsley Piert during pregnancy or breastfeeding?
It is best to avoid it, because there is not enough safety information for pregnancy or breastfeeding.

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

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