Herb & supplement monograph

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

But these pages have grown well beyond that into a full monograph — what Apple Cider Vinegar 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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Apple Cider Vinegar 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 Apple Cider Vinegar drug interaction appears low for most people. None of the listed interactions are rated major, and nearly all rest on theoretical concerns rather than proven effects in people.

Interactions deserving the most attention

The main theme in this profile is potassium. Heavy, long-term use of apple cider vinegar has been linked in one reported case to low potassium, so we pay the most attention to digoxin, where low potassium can raise the risk of heart toxicity, and to potassium-depleting diuretics and insulin, which could add to that effect. Apple cider vinegar may also modestly lower blood sugar, so people on diabetes medications could notice slightly stronger glucose effects, though study results are mixed.

What the rest of the list means

A long list of interacting medications does not mean each combination is harmful. Most entries here trace back to the same theoretical worry about potassium with overuse, supported mainly by a single case report rather than controlled human studies. Typical dietary or moderate use has not been shown to cause these problems in most people.

Check your medications against Apple Cider Vinegar

Based on HelloPharmacist’s Apple Cider Vinegar interaction data and reviewed under our editorial standards.

Interaction report

Drugs that interact with Apple Cider Vinegar

162 medications have a known interaction with Apple Cider Vinegar, 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 Apple Cider Vinegar using our pharmacist-reviewed interaction data.

AI summaries are generated from our Apple Cider Vinegar 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 Apple Cider Vinegar 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 Apple Cider Vinegar affects

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

All 4 drug categories Apple Cider Vinegar interacts with

Digoxin (lanoxin)Diuretic DrugsInsulinAntidiabetes Drugs

Digoxin (Lanoxin)

Theoretically, concomitant use of apple cider vinegar with digoxin might increase the risk of cardiac toxicity.
A case of hypokalemia related to chronic use of apple cider vinegar has been reported. Theoretically, overuse of apple cider vinegar could decrease potassium levels, increasing the risk of toxicity with digoxin.

Likelihood Possible Evidence D

Diuretic Drugs

Theoretically, concomitant use of apple cider vinegar with diuretic drugs might increase the risk of hypokalemia.
A case of hypokalemia related to chronic use of apple cider vinegar has been reported. There is some concern that people taking apple cider vinegar along with potassium depleting diuretics might have an increased risk for hypokalemia.

Likelihood Possible Evidence D

Insulin

Theoretically, concomitant use of apple cider vinegar with insulin might increase the risk of hypokalemia.
A case of hypokalemia related to chronic use of apple cider vinegar has been reported. Theoretically, overuse of apple cider vinegar concomitantly with insulin might increase the risk of hypokalemia.

Likelihood Possible Evidence D

Antidiabetes Drugs

Theoretically, taking apple cider vinegar with antidiabetes drugs might increase the risk of hypoglycemia.
Apple cider vinegar might reduce fasting and postprandial blood glucose levels and decrease gastric emptying in people with diabetes. However, not all research agrees. Theoretically, it might have additive effects on glucose levels when used with antidiabetes drugs.

Likelihood Possible Evidence B

Monograph

Apple Cider Vinegar: Uses, Safety & Side Effects

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

The bottom line

Apple cider vinegar is a fermented apple product that many people use hoping to help with blood sugar, weight, or digestion. The evidence for most of these uses is limited and mixed, and the modest effects seen in small studies are not a substitute for proven treatments. When diluted and used in small amounts it is generally safe for most people, but undiluted vinegar can harm teeth and the throat.

Part used: Fermented juice of apples (Malus domestica)
Common forms: Liquid vinegar, capsules, tablets, gummies, powders

People commonly use it for

Blood sugar support
Weight management
Digestive upset
Appetite control
Skin and hair care

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 undiluted or large doses can cause harm.

PregnancyInsufficient reliable information

Insufficient reliable information available; 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

Apple cider vinegar (ACV) is made from the fermented juice of crushed apples. Yeast first turns the apple sugars into alcohol, and then bacteria turn the alcohol into acetic acid, which gives vinegar its sour taste and strong smell.

ACV has been used in cooking for a very long time, in salad dressings, marinades, and pickling. Some products contain a cloudy substance called the "mother," which is made of yeast and bacteria left over from fermentation.

Today ACV is sold both as a liquid and as supplements like capsules, gummies, and tablets. People take it hoping it will help with blood sugar, weight, and digestion, though these popular uses are not strongly proven.

How it works

The main active ingredient in apple cider vinegar is acetic acid. ACV also contains small amounts of other acids, antioxidants, and (in unfiltered products) yeast and bacteria from the "mother."

Researchers think acetic acid may slow how fast the stomach empties and how quickly carbohydrates are broken down and absorbed, which could lower the blood sugar spike after a meal. Vinegar may also increase a feeling of fullness in some people.

Much of what we know about how ACV works comes from laboratory and animal studies or from very small human studies. These early findings do not prove that ACV produces meaningful health benefits in people.

Effectiveness

Does Apple Cider Vinegar work?

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

Evidence overview · 26 uses evaluated

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

Also studied for 26 conditions — evidence insufficient to rate

Insufficient Reliable Evidence To Rate Acne