Herb & supplement monograph

Dandelion Drug Interactions, Uses, Effectiveness, Safety & More

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS ·Updated July 2026

What is this page for?

First and foremost: how Dandelion interacts with medications. The heart of this page is the interaction list — every drug Dandelion is known to interact with, and how serious each one is.

But these pages have grown well beyond that into a full monograph — what Dandelion 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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On this page

Dandelion Drug Interactions: The Bottom Line

From the HelloPharmacist Editorial Team · Updated July 2026

Based on the available evidence, the overall risk of a clinically significant Dandelion drug interaction appears low for most people. None of the interactions are rated major, and nearly all rest on lab or animal research rather than proven effects in humans.

Interactions deserving the most attention

The best-documented concern is lithium: dandelion may act as a mild diuretic, which can cause lithium levels to rise, so this combination deserves genuine caution. People taking diabetes medications should also be alert for low blood sugar, since dandelion may boost insulin activity, and one person on insulin developed hypoglycemia after starting it. There is a theoretical bleeding concern with blood thinners as well, though this comes only from lab research so far.

What the rest of the list means

The long list of medications mostly reflects theory rather than confirmed harm. Lab research suggests dandelion may affect enzymes the body uses to process many drugs, which flags hundreds of medications at once, yet these effects have not been reported in people. Animal studies also hint it could lower levels of certain antibiotics, but this has not been seen in humans either.

Check your medications against Dandelion

Based on HelloPharmacist’s Dandelion interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Dandelion

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

Don’t want to scroll the list? Just ask.

Tell us the medications you take and we’ll check each one against Dandelion using our pharmacist-reviewed interaction data.

AI summaries are generated from our Dandelion interaction data for education only — always confirm with your pharmacist. How we use AI

2,830 drugs

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 Dandelion combination — clinical detail, likelihood, evidence level, and citations.
Content is reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

The big picture

The kinds of drugs Dandelion affects

Every type of medication (drug category) Dandelion is known to interact with. Open any category for the detail — or search your exact drug in the checker above.

All 7 drug categories Dandelion interacts with

Anticoagulant/antiplatelet DrugsAntidiabetes DrugsCytochrome P450 1a2 (cyp1a2) SubstratesGlucuronidated DrugsLithiumPotassium-sparing DiureticsQuinolone Antibiotics

Anticoagulant/Antiplatelet Drugs

Theoretically, taking dandelion root along with anticoagulant or antiplatelet drugs might increase the risk of bruising and bleeding.
In vitro research suggests that dandelion root inhibits platelet aggregation.

Likelihood Possible Evidence D

Antidiabetes Drugs

Theoretically, dandelion might increase the risk for hypoglycemia when used with antidiabetes drugs.
Laboratory research suggests that dandelion extract may have moderate alpha-glucosidase inhibitor activity and might also increase insulin secretion. Also, in a case report, a 58-year-old woman with type 2 diabetes who was being treated with insulin developed hypoglycemia 2 weeks after beginning to eat salads containing dandelion.

Likelihood Possible Evidence D

Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, dandelion might increase levels of drugs metabolized by CYP1A2.
Laboratory research suggests that dandelion might inhibit CYP1A2. So far, this interaction has not been reported in humans. However, until more is known, watch for an increase in the levels of drugs metabolized by CYP1A2 in patients taking dandelion.

Likelihood Possible Evidence D

Glucuronidated Drugs

Theoretically, dandelion might increase the clearance of drugs that are UDP-glucuronosyltransferase substrates.
There is some preliminary evidence that dandelion might induce UDP-glucuronosyltransferase, a phase II enzyme.

Likelihood Possible Evidence D

Lithium

Theoretically, through diuretic effects, dandelion might reduce excretion and increase levels of lithium.
Animal research suggests that dandelion has diuretic properties. As diuretics can increase serum lithium levels, the dose of lithium might need to be decreased when taken with dandelion.

Likelihood Probable Evidence D

Potassium-Sparing Diuretics

Theoretically, dandelion might increase the risk of hyperkalemia when taken with potassium-sparing diuretics.
Dandelion contains significant amounts of potassium.

Likelihood Possible Evidence D

Quinolone Antibiotics

Theoretically, dandelion might lower fluoroquinolone levels.
Animal research shows that dandelion reduces absorption of ciprofloxacin and can lower levels by 73%. However, this effect has not been reported in humans.

Likelihood Possible Evidence D

Monograph

Dandelion: Uses, Safety & Side Effects

Medically reviewed by Dr. Brian Staiger, PharmD, BCPS · Reviewed July 2026 ·

The bottom line

Dandelion is a common plant used in food and traditional medicine, often promoted as a natural 'water pill' and digestive aid. Human evidence for these uses is very limited, so its benefits are not well proven. It is generally considered safe as a food, but talk to your pharmacist or doctor before using concentrated supplements, especially if you have allergies or take other medicines.

Scientific name: Taraxacum officinale
Family: Asteraceae
Part used: Leaves, roots, and flowers
Common forms: Tea, capsules, tinctures, liquid extracts, dried root, fresh greens (food)

People commonly use it for

Water retention (diuretic)
Digestive upset
Liver and gallbladder support
Mild appetite stimulant
Skin conditions

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

Safety at a glance

OverallUse caution

Generally well tolerated as food, but supplement-strength doses are less studied and may cause allergy or stomach upset.

PregnancyInsufficient reliable information

Insufficient reliable information available; avoid using amounts greater than those in foods.

Read the full pregnancy detail

BreastfeedingInsufficient reliable information

Insufficient reliable information available; avoid using amounts greater than those in foods.

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

Dandelion (Taraxacum officinale) is a flowering plant in the daisy family (Asteraceae). It is famous for its bright yellow flowers and the puffy white seed heads that children love to blow. While many people see it as a lawn weed, it grows across Europe, Asia, and the Americas and has long been used as both a food and a folk medicine.

Nearly all parts of the plant are used. The young leaves are eaten in salads, the roots are sometimes roasted and brewed like coffee, and the flowers are made into wine or syrup. As a supplement, dandelion comes in teas, capsules, tinctures, and liquid extracts.

Traditionally, people have used dandelion for liver and gallbladder complaints, kidney and urinary concerns, digestion, and as a 'natural diuretic' to reduce water retention.

How it works

Dandelion contains a mix of plant compounds, including flavonoids, phenolic acids, sesquiterpene lactones (which give the bitter taste), inulin (a type of fiber), and potassium.

The bitter compounds are thought to stimulate digestive juices and bile flow, which is the traditional basis for using it as a digestive and liver aid. Its potassium content and certain plant chemicals are the proposed reason for its possible diuretic (water-losing) effect.

It is important to know that most of these mechanisms come from laboratory or animal research. We do not have strong proof that these effects translate into real, reliable benefits in people.

Effectiveness

Does Dandelion work?

Here’s what the research actually shows for each use — graded by Natural Medicines and reviewed by Dr. Brian Staiger, PharmD.

Evidence overview · 9 uses evaluated

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

Also studied for 9 conditions — evidence insufficient to rate

Insufficient Reliable Evidence To Rate Constipation