Apple Cider Vinegar Before Meals for Diabetics

Answer by Dr. Albana Greca Sejdini, MD, MMedSc, Family Physician, IDF Fellow

Hello,

Apple cider vinegar has been studied for possible effects on blood glucose, but I would not describe it as an “amazing remedy” or give a fixed treatment dose for everyone with diabetes.

Does Apple Cider Vinegar Lower Blood Sugar?

Recent controlled-trial reviews suggest that apple cider vinegar may modestly improve fasting glucose and HbA1c in some adults with type 2 diabetes.

However, the studies have used different doses, timing and treatment periods, so there is no universally accepted medical dose for diabetes treatment.

It should be considered, at most, an adjunct to established diabetes care—not a substitute for medication, healthy eating, exercise or glucose monitoring.

How Much Should You Take?

I would not tell every person with diabetes to take exactly 2 tablespoons before each meal. Research studies have used different amounts, often in the range of about 10–30 mL per day, but that does not establish a standard prescription.

If you want to try apple cider vinegar, discuss it with your healthcare professional, especially if you take insulin, sulfonylureas or other medicines that may lower glucose.

When Should It Be Taken?

Some studies have used vinegar with or shortly before meals, but there is no evidence that taking it exactly 2–5 minutes before eating is necessary.

The effect may also depend on the meal itself, particularly its carbohydrate content.

How Should You Dilute It?

If your clinician agrees that you can use it, dilute a small amount in plenty of water rather than drinking it straight.

I would not mix it with orange juice simply to improve the taste because juice can add a substantial amount of rapidly absorbed carbohydrate. Water is usually the

Can It Cause Low Blood Sugar?

Apple cider vinegar by itself is not a common cause of severe hypoglycemia, but if it changes your glucose response while you are also taking glucose-lowering medication, your readings could fall lower than expected.

If you use insulin or medicines that can cause hypoglycemia, monitor your glucose according to your treatment plan and discuss recurrent low readings with your clinician.

Our low blood glucose guide explains common causes and warning signs.

What Are the Side Effects?

Regular vinegar use can cause stomach irritation, nausea, reflux and tooth-enamel erosion. Large or prolonged amounts may also contribute to low potassium in susceptible people, especially when combined with certain medicines.

There is no evidence-based reason to stop vinegar for one week every month, and routine potassium testing is not required simply because someone occasionally uses vinegar as food.

What About Balsamic or Other Vinegars?

The glucose research is not limited exclusively to apple cider vinegar. Acetic acid, which is present in different vinegars, may partly explain the observed effects.

However, sweetened balsamic reductions or flavored vinegar drinks may contain added sugar, so check the nutrition label before using them regularly.

My Advice

If you enjoy apple cider vinegar, it can be used in salad dressings or diluted as part of your diet. I would not rely on it as a treatment strategy or chase a specific dose in the hope of replacing established diabetes care.

The more important measures are your overall glucose pattern, HbA1c, eating pattern, physical activity and prescribed treatment.

Related Questions

• What Is the Right Way to Take Apple Cider Vinegar?


• What Is the Effect of Vinegar on Type 2 Diabetes?


• Does Frozen Okra Work for Diabetes?

Related Pages

• Blood Glucose Targets for Adults With Diabetes


• Low Blood Glucose: Causes and Warning Signs


• Best Foods for Diabetes and What to Avoid

References

• 2025 Meta-analysis: Apple Cider Vinegar and Glycemic Control


• Umbrella Review: Vinegar Consumption and Health Outcomes


• ADA Standards of Care 2026: Nutrition and Supplements