Herb & supplement monograph

Euphorbia Hirta Drug Interactions, Uses, Safety & More

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Interaction report

Drugs that interact with Euphorbia Hirta

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

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

Euphorbia Hirta: Uses, Safety & Side Effects

The bottom line

Euphorbia hirta is a small tropical weed used in traditional medicine for breathing problems, diarrhea, and skin issues. Most of its supposed benefits come from laboratory or animal studies rather than solid human trials, so its true effectiveness in people is unclear. Because its safety is not well studied, talk to a pharmacist or doctor before using it.

Scientific name
Euphorbia hirta
Family
Euphorbiaceae
Part used
Whole plant (leaves, stems, flowers, and latex)
Common forms
Dried herb, tea/decoction, tincture, capsules, and topical extracts
People commonly use it for
  • Respiratory complaints like asthma and cough
  • Diarrhea and digestive upset
  • Skin wounds and warts
  • Worms and other parasites
  • General antimicrobial use

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

Safety at a glance
OverallUse caution

Human safety data are very limited, so use carefully and under professional guidance.

PregnancyPossibly Unsafe

When used orally; avoid using. Euphorbia hirta is reported to cause smooth muscle contraction and relaxation.

Read the full pregnancy detail
BreastfeedingPossibly Unsafe

When used orally; avoid using. Euphorbia hirta is reported to cause smooth muscle contraction and relaxation.

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

Euphorbia hirta is a small, low-growing weed that is common in warm, tropical, and subtropical parts of the world, including Asia, Africa, and the Americas. It often grows along roadsides, in gardens, and in waste ground. The plant has hairy stems and small leaves, and it releases a milky white sap (latex) when broken.

It has a long history in traditional and folk medicine systems. People have used the whole plant—prepared as teas, juices, or topical pastes—for breathing problems, stomach troubles, and skin conditions. Today it is sold in some places as a dried herb, tincture, or capsule.

While it is widely used in traditional practice, it is important to know that traditional use does not prove that something works or that it is safe.

Uses & effectiveness

People commonly use Euphorbia hirta for asthma, cough, and other breathing problems, for diarrhea and other digestive upset, for skin wounds and warts, and as a general antimicrobial or anti-parasitic remedy.

The honest summary is that strong human evidence is lacking for all of these uses. Most of the research is from laboratory (test tube) studies or animal experiments. These early studies suggest the plant may have antibacterial, anti-inflammatory, and antioxidant activity, but results in a dish or in animals often do not carry over to real benefits in people.

Well-designed clinical trials in humans are scarce. Because of this, no use of Euphorbia hirta can be called proven. If you are considering it for a health condition, view it as experimental and discuss it with a healthcare professional first.

How it works

Euphorbia hirta contains a mix of natural compounds, including flavonoids (such as quercetin), tannins, terpenoids, and other plant chemicals. Researchers believe these compounds may be responsible for the effects seen in laboratory studies.

Proposed actions, mostly based on lab and animal research, include fighting certain bacteria and fungi, calming inflammation, relaxing airway or smooth muscle, and acting as an antioxidant. Some studies suggest it may slow gut movement, which could explain its traditional use for diarrhea.

It is important to stress that these are proposed mechanisms. Showing an effect in a test tube does not mean the same thing happens safely or effectively in the human body.

Safety & precautions

The safety of Euphorbia hirta in humans has not been well studied. As with many plants in the Euphorbia family, the milky latex can irritate the skin, eyes, and mucous membranes, and getting it in the eyes can be especially painful and harmful.

People with liver or kidney problems, children, and older adults should be especially cautious, since there is little information on safe amounts. Anyone with a known allergy to plants in the spurge (Euphorbiaceae) family should avoid it.

Pregnancy and breastfeeding: Avoid Euphorbia hirta if you are pregnant, since it has traditionally been used to stimulate menstruation and there is no reliable safety data. It is also best avoided while breastfeeding because we do not know whether its compounds pass into breast milk or affect a nursing baby.

Always tell your pharmacist or doctor about any herbal product you are taking, and stop use and seek care if you notice a bad reaction.

Side effects

Because human studies are limited, the full side effect profile is not well known. Reported or expected effects include stomach upset, nausea, and vomiting, especially with larger amounts taken by mouth.

The plant's latex can cause skin irritation, rash, or eye irritation on contact. Allergic reactions are possible in sensitive people.

If you experience severe stomach pain, vomiting, a spreading rash, trouble breathing, or any eye injury from the sap, stop use and seek medical attention.

Euphorbia Hirta: Reported Adverse Effects

Documented safety reports on Euphorbia Hirta from the evidence-graded Natural Medicines (TRC Healthcare) database, shown word-for-word from the licensed record.

There is currently a limited amount of information available about the adverse effects of Euphorbia hirta. Orally, Euphorbia hirta may cause nausea and vomiting. Topically, skin contact with fresh Euphorbia hirta can cause irritation or contact dermatitis.

  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. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
Reports by condition
Dermatitis Dermatologic

Topically, skin contact with fresh Euphorbia hirta can cause irritation or contact dermatitis.

  1. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
Nausea and vomiting Gastrointestinal

Orally, Euphorbia hirta may cause nausea and vomiting.

  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.
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.

Adverse-effects data: Natural Medicines, Therapeutic Research Center

Dosing

There is no standardized or well-established dose for Euphorbia hirta. Traditional preparations vary widely depending on the form (tea, juice, tincture, or capsule) and the region.

Because product strength and purity can differ a lot between brands, follow the directions on the product label and do not exceed them. There is no good evidence to support any specific milligram amount.

The safest approach is to check with a pharmacist or doctor before starting, especially if you take other medicines or have a health condition.

Pregnancy & Breastfeeding

Euphorbia Hirta & Pregnancy

Possibly Unsafe

When used orally; avoid using. Euphorbia hirta is reported to cause smooth muscle contraction and relaxation.

  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.

Euphorbia Hirta & Breastfeeding

Possibly Unsafe

When used orally; avoid using. Euphorbia hirta is reported to cause smooth muscle contraction and relaxation.

  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
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 3 references that drive our Euphorbia Hirta monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  3. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
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.

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

Pharmacist Counseling Corner

Euphorbia Hirta: Common Questions

Does Euphorbia Hirta interact with prescription medications?
We do not currently list any known drug interactions for Euphorbia Hirta. This does not guarantee that none exist, so always confirm with your pharmacist before combining it with your medications.
How are Euphorbia Hirta 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 Euphorbia Hirta 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 Euphorbia Hirta 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 Euphorbia Hirta used for?
It is used in traditional medicine for breathing problems like asthma and cough, for diarrhea and digestive upset, and for skin wounds. These are traditional uses and are not well proven in humans.
Is Euphorbia Hirta safe to take?
Its safety in humans is not well studied. The plant's milky sap can irritate the skin and eyes, and taking it by mouth may cause stomach upset, so use it cautiously and check with a healthcare professional first.
Can I use Euphorbia Hirta during pregnancy or breastfeeding?
It is best avoided during both. There is not enough safety information, and it has traditionally been used to bring on menstruation, which raises concern during pregnancy.
Does Euphorbia Hirta really work for asthma?
There is no solid human evidence that it works for asthma. Most support comes from laboratory and animal studies, so do not rely on it in place of proven asthma treatments.

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

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