Apple cider vinegar has become a popular home remedy, with some people using it for blood sugar management, weight loss or digestive issues. Many add it to drinks, while others take it in capsules or gummies. But does apple cider vinegar actually improve your health?

Research suggests apple cider vinegar may offer a few potential benefits, but many of the health claims surrounding it are overstated or not supported by strong scientific evidence.

Understanding what the research shows and how to use apple cider vinegar safely can help you decide whether you should add it to your routine. Bethany M. Doerfler, MS, RDN, a clinical research dietitian at Northwestern Medicine Digestive Health Institute, breaks it down.

What Is Apple Cider Vinegar?

Apple cider vinegar is made by fermenting crushed apples. Yeast first turns the sugar in apples into alcohol. Then, bacteria convert the alcohol into acetic acid, which gives vinegar its sour taste and sharp smell.

Acetic acid is the main active compound in vinegar and is believed to play a role in how the body processes sugar, fat and energy.

What Does Research Say About Health Benefits?

Some scientific studies suggest apple cider vinegar may support certain areas of health. However, most studies are small or short term, so results should be interpreted with caution.

Weight loss

Apple cider vinegar is often promoted as a weight-loss aid, but can it truly lead to meaningful changes in weight?

A review of 10 studies in the journal Nutrients suggests that daily apple cider vinegar intake may lead to small, short‑term reductions in body weight, particularly among people with obesity or Type 2 diabetes. One study included in the review was later retracted due to concerns about data analysis, highlighting ongoing limitations in the evidence.

The observed weight loss effects are thought to be related to acetic acid, which may increase feelings of fullness and lead to slightly lower calorie intake after meals.

While apple cider vinegar may provide a modest short‑term benefit for some people, there is not enough evidence that it produces significant or lasting weight loss on its own.

Acid reflux

Acid reflux occurs when stomach acid flows back into the esophagus. Some people use apple cider vinegar to relieve acid reflux, but scientific evidence supporting this practice is limited.

“Apple cider vinegar is not directly therapeutic for patients with reflux and can actually worsen symptoms of heartburn,” cautions Doerfler.  

If you experience frequent acid reflux symptoms like heartburn, talk with your doctor before using apple cider vinegar regularly.

Blood sugar management

Some evidence suggests that vinegar — though not always specifically apple cider vinegar — may help with blood sugar management.

A small, widely cited 2004 study published in Diabetes Care found that people with insulin resistance who consumed vinegar before a high-carbohydrate meal showed improved insulin sensitivity compared with those who did not. Scientists believe vinegar may help slow stomach emptying and carbohydrate absorption, which can reduce blood sugar spikes after meals.

This review of several small studies suggests that apple cider vinegar consumption significantly reduced fasting blood sugar and HbA1c levels in people with Type 2 diabetes.

“There is some evidence that apple cider vinegar may help with blood sugar control, especially when combined with balanced eating patterns, but it should never replace medication or other lifestyle changes,” stresses Doerfler.

Cholesterol and heart health

Some studies suggest apple cider vinegar may slightly improve cholesterol levels, including lowering total cholesterol and triglycerides. However, these studies were generally small, so stronger research is needed before clear conclusions can be drawn.

Digestive health

Some people use apple cider vinegar to support digestion. Because vinegar is acidic, it may help stimulate digestive enzymes in the stomach. However, scientific evidence supporting vinegar for general digestive health remains limited.

Is Apple Cider Vinegar a Prebiotic?

Apple cider vinegar is sometimes described as a prebiotic, but the science behind that claim is still developing.

Prebiotics are compounds that feed beneficial bacteria in the gut, helping them grow and support digestive health. These compounds are typically types of fiber that the body cannot digest but gut microbes can use as fuel. Foods like onions, garlic, bananas and whole grains are among the most well-established dietary sources of prebiotics.

Apple cider vinegar contains very little fiber, so it isn’t considered a meaningful source of traditional prebiotics. However, raw and unfiltered apple cider vinegar contains “the mother,” a cloudy substance formed during fermentation that contains small amounts of proteins, enzymes and naturally occurring bacteria. Because of this, some scientists suggest apple cider vinegar may have mild probiotic and prebiotic-like effects, though these appear limited.

Overall, apple cider vinegar may support gut health in small ways, but it should not be viewed as a primary source of prebiotics. A diet rich in fiber-containing plant foods remains generally the most effective way to nourish beneficial gut bacteria.

Possible Risks

For most people, consuming small amounts of apple cider vinegar is safe. However, drinking large amounts regularly can cause negative side effects, such as:

• Tooth enamel erosion
• Throat irritation
• Digestive discomfort
• Nausea
• Low potassium levels

Because apple cider vinegar is highly acidic, drinking it can damage tooth enamel over time. To prevent this, always mix it with water rather than consuming it straight.

Who Should Be Cautious?

Talk with your doctor before using apple cider vinegar regularly if you:

• Take diabetes medications
• Use diuretics or medications that affect potassium levels
• Have kidney disease
• Experience frequent acid reflux

Apple cider vinegar may lower blood sugar or potassium levels, which can increase the risk of side effects when combined with certain medications.

Can Apple Cider Vinegar Affect Medications?

Yes, apple cider vinegar can impact the effectiveness or safety of some medications, including:

• Diabetes medications: may lower blood sugar and increase the risk of hypoglycemia
• Diuretics: may reduce potassium levels further
• Certain blood pressure medications: may also affect potassium levels

If you take prescription medications, talk with your doctor before adding apple cider vinegar to your routine.

How Much Apple Cider Vinegar Is Safe?

Most studies use 1 to 2 tablespoons per day, and experts recommend diluting it in water before drinking to reduce irritation.

Tips for safer use:

• Mix 1 to 2 tablespoons in a large glass of water.
• Drink it with meals.
• Use a straw to protect your teeth.
• Rinse your mouth afterward with water.
• Never drink apple cider vinegar straight.

Are Apple Cider Vinegar Gummies or Pills Effective?

Apple cider vinegar supplements are widely marketed, but their effectiveness is unclear. Some products contain very small amounts of acetic acid, and ingredients can vary widely because supplements are not closely regulated for quality or effectiveness. 

Easy Ways To Add Apple Cider Vinegar to Meals

Instead of drinking vinegar alone, consider incorporating it into meals:

• Make salad dressings with olive oil.
• Add it to marinades.
• Mix it into sauces.
• Use it to brighten vegetable dishes.

This approach adds flavor while reducing the risk of irritation.

Better Alternatives for Similar Health Benefits

If your goal is better metabolic or digestive health, strategies with stronger evidence include:

• Eating fiber-rich foods like beans, vegetables and whole grains
• Adding fermented foods like yogurt, kefir or kimchi into your diet
• Staying physically active
• Following a balanced, sustainable eating pattern

These habits are consistently associated with improved blood sugar management and overall metabolic health.

How To Use It Safely

“Apple cider vinegar may offer some health benefits, but it is not a cure-all and works best when used safely alongside healthy lifestyle habits,” says Doerfler.

Talk to your doctor about whether it’s a good option for you based on your own medical history and medications. If you choose to use it, moderate amounts diluted in water or food are the safest approach.