Herb & supplement monograph

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

But these pages have grown well beyond that into a full monograph — what Caraway 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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Caraway 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 Caraway drug interaction appears low for most people. No interactions are rated major, and every one on record comes from animal or laboratory research rather than confirmed effects in people.

Interactions deserving the most attention

The combinations we watch most closely involve medicines where even a small shift matters. Caraway lowered blood sugar in animal studies, so people taking diabetes medications could theoretically see added blood sugar lowering. Its possible diuretic effect means it might reduce how the body clears lithium, a drug with a narrow safety margin, and a caraway constituent showed sedative effects in animals, which could add to CNS depressants like sleep or anxiety medicines. None of these effects has been demonstrated in humans, but they are worth awareness because these medicines are closely monitored.

What the rest of the list means

The long list of interacting medications mostly reflects broad drug categories, not proven problems with each drug. These concerns are theoretical, drawn from animal research on caraway's possible effects on blood sugar, fluid balance, and sedation. Notably, one predicted effect on potassium loss did not hold up with continued use in animal studies, a reminder that theory and real-world outcomes can differ.

Check your medications against Caraway

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

Interaction report

Drugs that interact with Caraway

413 medications have a known interaction with Caraway, 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 Caraway using our pharmacist-reviewed interaction data.

AI summaries are generated from our Caraway 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 Caraway 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 Caraway affects

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

All 7 drug categories Caraway interacts with

Antidiabetes DrugsCns DepressantsDiuretic DrugsLithiumIsoniazidPyrazinamideRifampin (rifadin)

Antidiabetes Drugs

Theoretically, caraway might increase the risk of hypoglycemia when used with antidiabetes drugs.
Animal research suggests that caraway can reduce blood glucose levels. Monitor blood glucose levels closely. Medication dose adjustments may be necessary.

Likelihood Possible Evidence D

Cns Depressants

Theoretically, caraway might increase the effects and adverse effects of CNS depressants.
Animal research suggests that (S)-(+)-carvone, a major constituent of caraway seed extract, has sedative effects.

Likelihood Possible Evidence D

Diuretic Drugs

Theoretically, caraway might increase the risk of hypokalemia when used with diuretics that deplete potassium.
Animal research suggests that a single dose of caraway fruit extract can promote diuresis and increase the urinary excretion of sodium and potassium. However, sub-chronic use of caraway fruit extract does not seem to significantly increase potassium excretion, although urine output continues to be increased for up to 6 days.

Likelihood Possible Evidence D

Lithium

Theoretically, caraway might reduce excretion and increase levels of lithium due to diuretic effects.
Animal research suggests that caraway fruit extract has diuretic properties.

Likelihood Possible Evidence D

Isoniazid

Theoretically, caraway might increase the effects and adverse effects of isoniazid.
Animal research suggests that a specific fraction of caraway seed extract (CC-1a) can increase plasma levels of isoniazid when administered concomitantly. This interaction has not been reported in humans.

Likelihood Possible Evidence D

Pyrazinamide

Theoretically, caraway might increase the effects and adverse effects of pyrazinamide.
Animal research suggests that a specific fraction of caraway seed extract (CC-1a) can increase plasma levels of pyrazinamide when administered concomitantly. This interaction has not been reported in humans.

Likelihood Possible Evidence D

Rifampin (Rifadin)

Theoretically, caraway might increase the effects and adverse effects of rifampin.
Animal research suggests that a specific fraction of caraway seed extract (CC-1a) can increase plasma levels of rifampin when administered concomitantly. This interaction has not been reported in humans.

Likelihood Possible Evidence D

Monograph

Caraway: Uses, Safety & Side Effects

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

The bottom line

Caraway is a common cooking spice that has long been used to ease gas, bloating, and indigestion. Some evidence suggests caraway oil—often combined with peppermint oil—may help with indigestion, but evidence for most other uses is limited. Food amounts are generally safe; concentrated oils and supplements should be used cautiously and discussed with your pharmacist or doctor.

Scientific name: Carum carvi
Family: Apiaceae
Part used: Seeds (fruit) and essential oil
Common forms: Whole or ground seeds, tea, capsules, essential oil, tincture

People commonly use it for

Digestive upset and bloating
Gas (flatulence)
Indigestion (dyspepsia)
Irritable bowel symptoms
Increasing breast milk (traditional)

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

Safety at a glance

OverallUse caution

Generally safe in food amounts, but concentrated oil and supplement doses are less studied.

PregnancyPossibly Unsafe

When used in medicinal amounts. Caraway oil has been used to stimulate menstruation; 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.

Jump to a section

Overview

Caraway (Carum carvi) is a flowering plant in the same family as carrots, parsley, and dill. It is native to parts of Europe, Asia, and North Africa and is now grown in many regions. The small, crescent-shaped seeds (technically the fruit) have a warm, anise-like flavor and are widely used in breads, cheeses, and other foods.

Beyond cooking, caraway seeds and their essential oil have been used in traditional medicine for hundreds of years. People have taken caraway mainly for digestive complaints such as gas and bloating, and traditionally for other purposes like boosting breast milk. It is available as whole seeds, teas, capsules, tinctures, and concentrated essential oil.

How it works

Caraway contains aromatic oils, with carvone and limonene being the main components. These compounds give caraway its smell and are thought to relax the smooth muscle of the gut, which may reduce cramping and help trapped gas pass more easily.

Laboratory studies also suggest caraway extracts may have mild antimicrobial and antioxidant effects. However, these findings come mostly from test-tube and animal research, and it is not clear whether they translate into meaningful benefits in people.

Effectiveness

Does Caraway work?

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

Evidence overview · 8 uses evaluated

1 Possibly effective 7 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.

Possibly Effective Dyspepsia