The simplest way to incorporate apple cider vinegar into your routine is to mix one tablespoon into an 8-ounce glass of water and drink it before a meal, once per day. That single serving is enough to get the potential benefits without risking the side effects that come from overdoing it. But there’s more to getting it right than just pouring and drinking.
Start With the Right Dilution
Never drink apple cider vinegar straight. It’s about 5% to 6% acetic acid, which is strong enough to irritate your throat, damage tooth enamel, and upset your stomach. The standard dilution is one tablespoon of vinegar in one cup (8 ounces) of water. Some people prefer to split a single tablespoon across three smaller doses, one before each meal, diluted in water each time. Either approach works.
You can also mix it into tea, sparkling water, or a homemade salad dressing if you find the taste hard to tolerate on its own. Adding a small amount of honey to your diluted vinegar drink can take the edge off. The key is that the vinegar is always well diluted before it touches your teeth or hits your stomach.
When to Drink It
Most people take apple cider vinegar before meals. The reasoning is straightforward: acetic acid slows down how quickly your stomach empties and interferes with enzymes that break down starches. Both of these effects blunt the blood sugar spike that follows a meal. In a clinical trial of people with diabetes, those who consumed apple cider vinegar saw their fasting blood sugar drop by an average of about 23 mg/dl, and their HbA1c (a marker of long-term blood sugar control) fell by 1.42 percentage points compared to virtually no change in the control group.
If your goal is appetite control, drinking it 15 to 30 minutes before eating gives it time to reach your stomach and start slowing digestion. There’s no strong evidence that drinking it at bedtime or first thing in the morning on an empty stomach offers additional benefits.
Protect Your Teeth
This is the most commonly overlooked risk. A study examining people who drank a vinegar solution twice daily found evidence of erosive tooth wear, even when the vinegar was diluted in a cup of water. Acetic acid softens enamel, and enamel doesn’t grow back.
A few habits reduce the risk. Drink your diluted vinegar through a straw so it bypasses your teeth. Don’t brush your teeth for at least 30 minutes afterward, because brushing softened enamel accelerates the damage. Rinsing your mouth with plain water right after drinking can help neutralize the acid faster.
Choose Raw, Unfiltered Vinegar
You’ll find two types on store shelves: clear, pasteurized apple cider vinegar and the cloudy, raw kind. For health purposes, most people choose raw and unfiltered. The cloudy sediment at the bottom of the bottle is called “the mother,” a colony of natural bacteria and yeasts produced during fermentation. Raw apple cider vinegar contains natural probiotics that can support gut health and immune function, along with antioxidants. Pasteurized versions have the acetic acid but lack the live cultures.
The nutrition label on any bottle of apple cider vinegar will look unimpressive, with virtually no calories, vitamins, or minerals. The active compounds that drive its effects, primarily acetic acid and probiotics, simply aren’t captured on a standard label.
Easy Ways to Use It Beyond Drinking
If you don’t enjoy drinking vinegar water, you can work it into food instead. A tablespoon whisked into a salad dressing with olive oil and mustard is one of the easiest options. You can splash it into marinades for chicken or pork, stir it into soups or stews near the end of cooking, or add it to a smoothie where fruit flavors mask the tartness. Some people use it as a tangy finishing drizzle on roasted vegetables or grain bowls. All of these count toward your daily tablespoon.
Who Should Be Cautious
Apple cider vinegar can interact with several common medications. If you take insulin or drugs that stimulate insulin production, adding vinegar on top can push your blood sugar dangerously low. The heart medication digoxin already lowers potassium levels, and vinegar can compound that effect. Certain diuretics (water pills) that cause potassium loss carry the same risk. If you’re on any of these, talk to your prescriber before making apple cider vinegar a daily habit.
People with acid reflux should also proceed carefully. Despite popular claims that apple cider vinegar helps with heartburn by introducing beneficial gut bacteria, there’s no solid evidence to support that. What is clear is that vinegar is highly acidic, and adding more acid to an already irritated esophagus can make symptoms worse.
How Much Is Too Much
One tablespoon per day, diluted, is the standard recommendation. There’s a case report of a woman hospitalized with dangerously low potassium and other blood chemistry abnormalities after consuming large amounts of apple cider vinegar over a long period. Exceeding one serving a day increases the risk of enamel erosion, throat irritation, and digestive discomfort without clear additional benefit. More is not better here. Stick with a single daily serving, pay attention to how your body responds, and give it a few weeks before deciding whether it’s working for you.