Fumitory Drug Interactions, Uses, Effectiveness, Safety & More
What is this page for?
First and foremost: how Fumitory interacts with medications. The heart of this page is the interaction list — every drug Fumitory is known to interact with, and how serious each one is.
But these pages have grown well beyond that into a full monograph — what Fumitory is, what people use it for and how strong the evidence is, its safety and side effects, and answers to the questions we’re asked most — written and reviewed by the clinical staff at HelloPharmacist. It’s educational information from our licensed clinical databases, not medical advice, and we don’t sell or endorse products. Our editorial policy
Check Fumitory against your medication
Add one medicationDrugs that interact with Fumitory
0 medications have a known interaction with Fumitory, graded by severity. Select any drug for the full evidence-based detail.
We don’t currently list any known drug interactions for Fumitory. This doesn’t guarantee none exist — always confirm with your pharmacist before combining supplements with your medications.
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 Fumitory combination — clinical detail, likelihood, evidence level, and citations.
- Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
Fumitory: Uses, Safety & Side Effects
Fumitory is a traditional European herb used mainly for digestive and minor liver or gallbladder complaints, but solid human evidence is very limited. It may cause side effects at higher doses, and its safety is not well established, so talk with your pharmacist or doctor before using it and avoid it during pregnancy and breastfeeding.
- Scientific name
- Fumaria officinalis
- Family
- Papaveraceae
- Part used
- Aerial parts (flowering tops, leaves, and stems)
- Common forms
- Tea, dried herb, liquid extract, tincture, capsules
- Digestive and bile-flow complaints
- Mild liver and gallbladder support
- Skin conditions like eczema
- Mild constipation
- Cleansing or 'detox' tonics
Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.
Generally used short-term in small amounts, but human safety data are limited.
Insufficient reliable information available; avoid using.
Read the full pregnancy detailInsufficient reliable information available; avoid using.
Read the full breastfeeding detailPregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Overview
Fumitory (Fumaria officinalis) is a small flowering plant in the poppy family. It has feathery, gray-green leaves and tiny pink-purple flowers, and it grows as a common weed in fields, gardens, and along roadsides across Europe, North Africa, and parts of Asia.
The name comes from the old idea that its smoke resembled rising vapor or "smoke from the earth." For centuries, traditional European herbalists have used the dried above-ground parts of the plant to make teas and extracts.
Today it is most often taken as a tea or liquid extract, mainly for digestive complaints and to support bile flow. It is sometimes found in blended herbal products marketed for liver health or skin.
How it works
Fumitory contains a group of natural compounds called isoquinoline alkaloids (such as protopine and fumarine), along with flavonoids, organic acids, and other plant chemicals.
Researchers think these compounds may help balance the flow of bile, which could ease cramping in the digestive tract and gallbladder. Some compounds appear to relax or, at higher amounts, stimulate smooth muscle, which may explain its traditional use for cramps.
It is important to know that most of this information comes from laboratory and animal studies, not large human trials. The exact way Fumitory works in people is not fully understood.
Does Fumitory work?
How to read these evidence grades
Natural Medicines’ 7-point scale. We show each rating’s label word-for-word.
Possibly Ineffective Irritable bowel syndrome (IBS)
Limited data suggest that oral fumitory is not beneficial in patients with IBS.
Also studied for 2 conditions — evidence insufficient to rate
Insufficient Reliable Evidence To Rate Atopic dermatitis (eczema)
Oral fumitory has only been evaluated in combination with other ingredients; its effect when used alone is unclear.
Insufficient Reliable Evidence To Rate Breast cancer-related hot flashes
Oral fumitory has only been evaluated in combination with other ingredients; its effect when used alone is unclear.
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
When used short-term in the small amounts found in teas and standard herbal preparations, Fumitory is generally considered relatively well tolerated. However, human safety data are limited, and higher doses may not be safe.
People with gallstones, bile duct blockage, or serious liver disease should not use Fumitory without medical advice, since affecting bile flow could be harmful. Anyone with a chronic health condition should check with a pharmacist or doctor first.
Pregnancy: There is not enough information to consider Fumitory safe, so it should be avoided during pregnancy.
Breastfeeding: Safety is unknown, so it is best avoided while breastfeeding.
It is also not recommended for infants and young children. Do not use it as a replacement for prescribed medicine, and stop and seek care if you feel unwell.
Side effects
At typical low doses, side effects are usually mild and uncommon. Some people may notice stomach upset or mild digestive discomfort.
At higher doses, Fumitory's alkaloids may cause more pronounced effects, and overuse should be avoided. Allergic reactions are possible, especially in people sensitive to plants in the poppy family.
Stop using Fumitory and seek medical help if you develop signs of an allergic reaction such as rash, swelling, or trouble breathing.
Dosing
There is no well-established standardized dose for Fumitory. Traditional use involves teas or liquid extracts made from the dried herb, but exact amounts vary widely between products.
Because a reliable, evidence-based dose has not been set, the safest approach is to follow the directions on the product label and not exceed them. Avoid long-term use unless advised by a healthcare professional.
Always check with your pharmacist or doctor before starting Fumitory, especially if you take other medicines or have a medical condition.
Fumitory & Pregnancy
Fumitory & Breastfeeding
© 2026 Therapeutic Research Center
Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center
References & further reading
The 1 sources that drive our Fumitory monograph — publicly available pages from reputable medical and government organizations. Every link was verified to work before publishing.
- Fumitory — MedlinePlus / RxList Source
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.
Brands that make products with Fumitory
12 brands in our database make a supplement containing Fumitory.
Supplement products with Fumitory
46 products in our database contain Fumitory. Open any to see its full ingredient list and every drug interaction we check.
Fumitory: Common Questions
What is Fumitory used for, and does it work?
Does Fumitory interact with prescription medications?
How are Fumitory interactions rated?
Is it safe to take Fumitory with my medications?
Where does this Fumitory interaction information come from?
What is Fumitory used for?
Is Fumitory safe to take?
Can I use Fumitory while pregnant or breastfeeding?
How is Fumitory usually taken?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Products that contain Fumitory
A rotating sample of real supplements in our database that list Fumitory — open any to see its full ingredients and every drug interaction we check.
- Fumitory Powder by TerraVita Premium Collection
- Fumitory Alcohol Free by Herbal Terra
- HepatoPlex by Karuna
- Cholesterol Maintenance Complex Strawberry Flavor by TerraVita
- Biocidin LSF Broad-Spectrum Liposomal Formula by Biocidin Botanicals
- Biocidin by Bio-Botanical Research
- Fumitory Herb 340 mg by Botanic Choice
- Cholesterol Maintenance Complex 450 mg by TerraVita Premium Collection
- Biocidin Broad-Spectrum Liquid Capsules by Biocidin Botanicals
- Cholesterol Maintenance Complex Powder by TerraVita Premium Collection
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