✓ No active regulatory warningsFDA MedWatch, EMA EudraVigilance, WHO VigiBase, WADA Prohibited List · 2026-05-29
📰Read the full Apple Cider Vinegar evidence review on GMJ News →Complete clinical article, references and updates on news.gmj.ge. This page is the structured safety summary.⚠ ALWAYS DILUTE — dental erosion and esophageal burns from undiluted [1]
⚠ 'Alkalizing' claim is biochemically nonsensical (ACV is an acid) [1]
⚠ ACV gummies: mostly sugar, minimal acetic acid [1]
⚠ Any vinegar provides the same acetic acid effect — ACV is not special [1]
⚠ Insulin/sulfonylurea patients — additive glucose lowering [1]
ℹ️ Not obtained from food. Not applicable — this is not obtained from food in meaningful amounts; supplementation is the practical route.
🔬 Lab interpreter
Recommended test
Potassium (if chronic use)
Potassium (if chronic use)
Reference range / target
3.5–5.0 mEq/L
3.5–5.0 mEq/L
Chronic acetic acid may lower potassium [1].
Full lab monitoring ↓⚕ For professionals — confirm ranges against your local laboratory.
Clinical verdict
ACV's active component is acetic acid (~5%). Modest blood glucose reduction (~20–30% postprandial) is real. Weight loss is trivial (~1–2 kg/12 wk). ALL other popular claims ('detox,' alkalizing, cancer) have minimal/no evidence. ALWAYS DILUTE — undiluted ACV damages tooth enamel. ACV gummies are mostly sugar. Any vinegar would have similar acetic acid effects [1] [2].
1 How much do I need?
👤 Adults: Specific dosage data under clinical review
👴 Elderly: Specific dosage data under clinical review
🤰 Pregnancy: See guidance
Small culinary amounts safe. Not as supplement [1].
👦 Pediatric: See guidance
Not recommended as supplement. Dental erosion risk [1].
🏃 Athletes: Standard dose
⚖️ Obesity: Standard dose
Fat-soluble compounds may require dose adjustment in obesity.
🩺 Renal: Consult specialist
Dose adjustment may be needed in renal impairment.
🌱 Vegan: Standard dose
How to take
🍽 Timing: Before or with carbohydrate-containing meals [1].
💊 With food: DILUTE in 240 mL water. Use a straw to protect teeth [1].
🚫 Avoid: Undiluted ACV (dental/esophageal damage). ACV gummies (mostly sugar) [1].
2 Which form?
| Form | Bioavailability | Vegan | Cost |
|---|---|---|---|
| ["Liquid ACV (with 'mother')", 'common', "'The mother' is a cellulose mat of acetic acid bacteria. No proven advantage over filtered [1]."] | Standard | Check label | |
| ['ACV gummies', '', 'Popular. Contains much less acetic acid than liquid. Mostly sugar [1].'] | Standard | Check label | |
| ['ACV capsules', '', 'Inconsistent acetic acid content [1].'] | Standard | Check label |
3 Common questions
Does ACV help blood sugar? ▼
Yes, modestly — acetic acid delays carbohydrate digestion and gastric emptying. ~20–30% postprandial glucose reduction when taken with meals [1]. This is a real effect of acetic acid, not magic. ANY vinegar would have similar effects.
Is 'the mother' important? ▼
'The mother' is a cellulose mat of bacteria — it has no proven health advantage over filtered ACV. The active component is acetic acid, which is in all ACV [1].
ACV gummies? ▼
They contain very little acetic acid and are mostly sugar. They are essentially candy with ACV marketing [1].
Does ACV 'alkalize' the body? ▼
No — this is biochemically nonsensical. ACV is an ACID (pH ~3). The body maintains tight pH homeostasis via respiratory and renal buffering, not dietary acid/base. ACV cannot meaningfully change blood pH [1].
4 Clinical evidence
Strong
Acetic acid delays gastric emptying and inhibits disaccharidase — established pharmacology [1]. Dental enamel erosion from undiluted ACV — confirmed in vitro and case reports [1]. HIGH
Moderate
Postprandial glucose: small studies show ~20–30% reduction in postprandial glucose when ACV (acetic acid) is taken with carbohydrate-containing meals [1]. Weight loss: one 12-week Japanese RCT (n=175) showed ~1–2 kg loss with 15–30 mL/day ACV vs placebo [2]. MODERATE
Insufficient
5 Safety, toxicity & adverse events
Relative
⚠ Acid reflux/gastritis or esophageal injury — undiluted use is corrosive; always dilute
⚠ Erodes tooth enamel — rinse after
⚠ Low potassium or concurrent diuretics/digoxin — may lower potassium
⚠ Diabetes — additive glucose lowering; delays gastric emptying (caution in gastroparesis)
🚩 Red flags
● Patient drinking undiluted ACV — dental/esophageal damage [1]
● Patient on insulin + ACV — additive glucose lowering [1]
● Patient on digoxin + chronic ACV — hypokalemia → digoxin toxicity [1]
● Patient believing ACV 'alkalizes' the body — biochemically impossible [1]
6 Interactions
Drug interactions
Insulin/sulfonylureas Moderate
Mechanism: Acetic acid delays gastric emptying → additive glucose lowering. [1]
Effect: Hypoglycemia risk. [1]
Action: Monitor glucose [1].
Digoxin Moderate
Mechanism: Chronic ACV may cause hypokalemia → increased digoxin sensitivity. [1]
Effect: Digoxin toxicity. [1]
Action: Monitor potassium and digoxin levels [1].
Supplement synergies
Berberine · 500 mg berberine
Both reduce postprandial glucose through different mechanisms [1].
Both reduce postprandial glucose through different mechanisms [1].
7 Regulatory
United States (FDA): Food (condiment). Supplements marketed but not FDA-evaluated for claims [1].
8 US supplement products
160
on-market products containing Apple Cider Vinegar (NIH DSLD)
Brands carrying Apple Cider Vinegar (79)
Click a brand to see its Apple Cider Vinegar products.
9 Frequently paired with
10 Cite this page
Vancouver: Pkhakadze G. Apple Cider Vinegar — safety profile [Internet]. Tbilisi: PHIG; 2026 [cited 2026 Aug 15]. Available from: https://supplement.ge/ingredients/apple-cider-vinegar/
APA 7th: Pkhakadze, G. (2026). Apple Cider Vinegar — Safety profile. Public Health Institute of Georgia. https://supplement.ge/ingredients/apple-cider-vinegar/
📋 Editorial information
Author: Prof. G. Pkhakadze, MD, MPH, PhD
Institution: Public Health Institute of Georgia (PHIG)
Affiliation: David Tvildiani Medical University (DTMU)
First published: January 2026
Last reviewed: 2026-05-29
Next review: February 2027
References: 2 cited sources
COI: SupplementIndex receives no funding from supplement manufacturers. All content independently authored by PHIG.
Process: Systematic literature review
📄 License & reuse
Published under Creative Commons Attribution 4.0 International (CC BY 4.0). You may share and adapt for any purpose with attribution.
Pkhakadze G. "Apple Cider Vinegar — Safety Profile." SupplementIndex, PHIG, 2026. https://supplement.ge/ingredients/apple-cider-vinegar/ CC BY 4.0.
GP
Prof. G. Pkhakadze, MD, MPH, PhD
Professor of Public Health · Head of Department, DTMU
Editor-in-Chief, Georgian Medical Journal (ISSN 3088-4322)
Chair, Public Health Institute of Georgia · UEMS Public Health Section
Educational and public health purposes. CC BY 4.0. Consult your healthcare provider before starting any supplement. Corrections: info@accreditation.ge. Publisher: PHIG