Hedge Mustard Drug Interactions, Uses, Safety & More
What is this page for?
First and foremost: how Hedge Mustard interacts with medications. The heart of this page is the interaction list — every drug Hedge Mustard is known to interact with, and how serious each one is.
But these pages have grown well beyond that into a full monograph — what Hedge Mustard 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
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Add one medicationHedge Mustard Drug Interactions: The Bottom Line
From the HelloPharmacist Editorial Team · Updated July 2026Based on the available evidence, the overall risk of a clinically significant Hedge Mustard drug interaction appears low for most people, though those taking heart medicines deserve extra care. None of the listed interactions are rated major, and every one rests on theoretical reasoning rather than documented reactions in people.
The concern that stands out most involves digoxin. Hedge mustard's flowering parts contain compounds that act on the heart the same way digoxin does, so combining them could theoretically add up to too much effect. The same worry extends to medicines that lower potassium, such as potassium-depleting diuretics and overused stimulant laxatives, because low potassium makes these heart-active compounds more toxic. Certain antibiotics and quinine could also, in theory, raise levels of these compounds in the body.
Although the list of interacting medications is long, nearly all of it traces back to this single theoretical concern about hedge mustard's heart-active compounds. None of these effects has been confirmed in human studies, so a medication appearing on the list does not mean the combination has actually caused harm.
Based on HelloPharmacist’s Hedge Mustard interaction data and reviewed under our editorial standards.
Drugs that interact with Hedge Mustard
133 medications have a known interaction with Hedge Mustard, graded by severity. Select any drug for the full evidence-based detail.
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Tell us the medications you take and we’ll check each one against Hedge Mustard using our pharmacist-reviewed interaction data.
AI summaries are generated from our Hedge Mustard interaction data for education only — always confirm with your pharmacist. How we use AI
No drugs match “”.
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 Hedge Mustard combination — clinical detail, likelihood, evidence level, and citations.
- Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.
The kinds of drugs Hedge Mustard affects
Every type of medication (drug category) Hedge Mustard is known to interact with. Open any category for the detail — or search your exact drug in the checker above.
Digoxin (Lanoxin)
Theoretically, taking hedge mustard with digoxin might increase the risk of cardiac glycoside toxicity.
The flowering above ground parts of hedge mustard contain cardioactive glycosides. Theoretically, taking hedge mustard with digoxin might increase the risk of cardiac glycoside toxicity.
Diuretic Drugs
Theoretically, taking hedge mustard with diuretic drugs might increase the risk of cardiac glycoside toxicity.
The flowering above ground parts of hedge mustard contain cardioactive glycosides. Theoretically, concomitant use of potassium depleting diuretics and hedge mustard can increase the risk of cardiac glycoside toxicity due to potassium depletion.
Macrolide Antibiotics
Theoretically, taking hedge mustard with macrolide antibiotics might increase the risk of cardiac glycoside toxicity.
The flowering above ground parts of hedge mustard contain cardioactive glycosides. Macrolide antibiotics appear to increase the gastrointestinal absorption of oral digoxin. Theoretically, concomitant use of macrolide antibiotics might increase the absorption of the cardiac glycosides found in hedge mustard.
Quinine
Theoretically, taking hedge mustard with quinine might increase the risk of cardiac glycoside toxicity.
The flowering above ground parts of hedge mustard contain cardioactive glycosides. Quinine may reduce the clearance of oral digoxin. Theoretically, concomitant use of quinine with hedge mustard might reduce the clearance of cardiac glycosides found in hedge mustard.
Stimulant Laxatives
Theoretically, taking hedge mustard with stimulant laxatives might increase the risk of cardiac glycoside toxicity.
The flowering above ground parts of hedge mustard contain cardioactive glycosides. Theoretically, overuse or misuse of stimulant laxatives may increase the risk of cardiac glycoside toxicity due to potassium depletion.
Tetracycline Antibiotics
Theoretically, taking hedge mustard with tetracycline antibiotics might increase the risk of cardiac glycoside toxicity.
The flowering above ground parts of hedge mustard contain cardioactive glycosides. Tetracycline antibiotics appear to increase the gastrointestinal absorption of oral digoxin. Theoretically, concomitant use of tetracycline antibiotics might increase the absorption of the cardiac glycosides found in hedge mustard.
Hedge Mustard: Uses, Safety & Side Effects
Hedge mustard is a traditional European herb long nicknamed the 'singer's plant' because it was used to soothe hoarseness and sore throats. Solid scientific evidence for these uses is very limited, so it is best seen as a folk remedy rather than a proven treatment. Talk to your pharmacist or doctor before using it, and avoid it during pregnancy and breastfeeding.
- Scientific name
- Sisymbrium officinale
- Family
- Brassicaceae
- Part used
- Aerial parts (leaves, stems, flowers) and seeds
- Common forms
- Tea, syrup, tincture, lozenges, gargle/throat preparations
- Hoarseness and voice loss
- Sore throat
- Cough
- Mild laryngitis
- Throat irritation
Popular and traditional uses — not proof it works. See “Uses & effectiveness” below for the evidence.
Generally considered low-risk for short-term use in adults, but human safety data are limited.
Pregnancy & breastfeeding ratings are from Natural Medicines (Therapeutic Research Center). Safety guidance is general; always confirm with your pharmacist or doctor for your situation.
Overview
Hedge mustard (Sisymbrium officinale) is a wild plant in the cabbage and mustard family. It grows as a common weed along roadsides, fields, and hedges across Europe, parts of Asia, North Africa, and other temperate regions. The plant has small yellow flowers and a peppery taste, like many of its mustard relatives.
For centuries in European folk medicine, hedge mustard was used to ease throat and voice problems. It earned the nickname the "singer's plant" or "herb of the singers" because people believed it could restore a lost or hoarse voice. Today it is most often taken as a tea, syrup, tincture, or throat lozenge.
Uses & effectiveness
People most commonly use hedge mustard for hoarseness, sore throat, cough, and mild laryngitis. These uses come almost entirely from long-standing traditional practice rather than from strong clinical research.
The scientific evidence is limited and preliminary. Some laboratory studies suggest the plant contains compounds that may have soothing or mild antioxidant effects, but high-quality human studies showing it reliably improves voice problems or throat symptoms are lacking. There is not enough solid evidence to say how well it works for any condition.
In short, hedge mustard may be a gentle traditional remedy for throat comfort, but it should not replace proven treatments or medical care for ongoing voice loss, persistent cough, or throat pain.
How it works
Hedge mustard contains glucosinolates (sulfur compounds typical of the mustard family), flavonoids, and other plant chemicals. When taken as a tea or syrup, these may help coat and soothe irritated tissues in the throat, which could explain its traditional use for hoarseness.
Laboratory research has explored possible antioxidant, anti-inflammatory, and mild muscle-relaxing effects on tissues. However, most of this work is based on test-tube or animal studies, and it is not clear that these effects happen in people at the amounts found in a cup of tea or a dose of syrup.
Safety & precautions
Hedge mustard has been used as a food and folk medicine for a long time, and short-term use of normal amounts is generally thought to be low-risk for healthy adults. Still, formal safety studies in humans are limited.
People with thyroid problems may want to be cautious, since plants in the mustard family contain compounds that can affect the thyroid when eaten in large amounts. People with allergies to other Brassica plants (such as cabbage, broccoli, or mustard) could also react to it.
For pregnancy and breastfeeding, there is not enough reliable safety information. Because of this uncertainty, it is best to avoid hedge mustard if you are pregnant or breastfeeding. Always check with your pharmacist or doctor before using any new herbal product, especially if you have a health condition or take medications.
Side effects
When used in small, food-like amounts, hedge mustard is not commonly linked to serious side effects. Possible problems include stomach upset or mild digestive discomfort, and allergic reactions in people sensitive to mustard-family plants.
As with other mustard-family plants, very large or long-term amounts could in theory affect thyroid function. If you notice a rash, swelling, trouble breathing, or any unusual symptoms, stop using it and seek medical care.
Hedge Mustard: Reported Adverse Effects
Documented safety reports on Hedge Mustard from the evidence-graded Natural Medicines (TRC Healthcare) database, shown word-for-word from the licensed record.
Orally, hedge mustard might be unsafe due to its cardiac glycoside constituents. Topically, no adverse effects have been reported. However, a thorough evaluation of safety outcomes has not been conducted for either route of administration.
Serious Adverse Effects (Rare):
Orally: Theoretically, digitalis-like effects including cardiac rhythm disorders, diarrhea, headache, and vomiting.
Cluster headache Neurologic/CNS
Orally, hedge mustard may theoretically cause digitalis-like effects such as headache.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
Diarrhea Gastrointestinal
Orally, hedge mustard may theoretically cause digitalis-like effects such as vomiting and diarrhea.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
Adverse-effects data: Natural Medicines, Therapeutic Research Center
Dosing
There is no well-established standardized dose for hedge mustard. Traditional use involves teas, syrups, and tinctures made from the aerial parts of the plant, but amounts vary widely between products and recipes.
If you choose to use a commercial product, follow the directions on the label and do not exceed the recommended amount. Because dosing is not standardized and quality can vary between brands, it is wise to check with a pharmacist or doctor first, especially before giving it to children or using it for more than a few days.
Hedge Mustard & Pregnancy
Hedge Mustard & Breastfeeding
© 2026 Therapeutic Research Center
Pregnancy & lactation ratings: Natural Medicines, Therapeutic Research Center
References & further reading
The 4 references that drive our Hedge Mustard 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.
- Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
- Ellenhorn MJ, et al. Ellenhorn's Medical Toxicology: Diagnoses and Treatment of Human Poisoning. 2nd ed. Baltimore, MD: Williams & Wilkins, 1997.
- Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
- Burnham TH, ed. Drug Facts and Comparisons, Updated Monthly. Facts and Comparisons, St. Louis, MO.
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
Hedge Mustard: Common Questions
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Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
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