Written through SaVanna Shoemaker, MS, RDN, LD on April 7, 2021 — medically reviewed by Lisa Hodgson, RDN, CDN, CDCES, FADCES, Nutrition

Apple cider vinegar is a very acidic, fermented liquid made indigenous apple juice. The a popular food preparation ingredient and dietary supplement.

While some civilization take the straight, others add it to your water, take it apple cider vinegar supplements, or drink beverages the contain apple cider vinegar.

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Some evidence argues that the vinegar may help lower blood sugar levels and an increase weight loss, both of i m sorry are often the objectives of many people who fast.

Fasting help you enter ketosis, a metabolic state in which your body burns stored body fat rather than energy acquired from food as its main fuel source (1).

However, you might wonder even if it is you deserve to safely take apple cider vinegar while fasting without gift kicked the end of ketosis. This write-up reviews exactly how apple cider vinegar affects fasting and how much you should take.

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How apple cider vinegar influence a fast
To remain in ketosis in a fasted state, you need to maintain an extremely low carbohydrate intake.

This is due to the fact that carbs room a rapidly accessible fuel for your body, and if they’re current in high enough quantities, your body will switch earlier to burning carbs rather of burn stored body fat (1).

One tablespoon of to apologize cider vinegar contains around 3 calories and less than 1 gram the carbs. Therefore, it’s unlikely the it would impact your fast — uneven you take it it in large quantities, which can be unsafe (2).

Taking apologize cider vinegar when fasting appears to assist fight cravings and hunger pangs. Plus, numerous studies have shown that adding vinegar come a meal helps rise feelings of fullness (3, 4, 5).

Studies have also provided associations between vinegar intake, improved blood sugar levels, and also reduced weight (5, 6).

While plenty of of these researches weren’t conducted among fasted people, they indicate that apologize cider vinegar may assist combat hunger and also promote steady blood sugar levels, both of i m sorry are useful during a fast.


Apple cider vinegar consists of only trace amounts of carbs and also is because of this unlikely to negatively impact your fast. Furthermore, it may help you feel more full and also maintain her blood sugar levels.

To reap some of the potential benefits of apologize cider vinegar, less is more.

Taking 1–2 tablespoons (15–30 mL) daily should it is in sufficient, together taking too much can lead to some unpleasant side effects like this enamel erosion (7).

Alternatively, you deserve to take apologize cider vinegar capsules, which contain dehydrated vinegar. With these, it’s ideal to stick to the encourage serving dimension on the supplement label.

However, you might want to avoid apple cider gummies and also drinks when fasting. Yes sir no guarantee these commodities won’t kick you the end of ketosis, as they frequently contain added sugar and also calories.


Stick to 1–2 tablespoons (15–30 mL) of apologize cider vinegar per day. Friend can also take to apologize cider vinegar capsules instead, however gummies and drinks must be avoided while fasting.

Apple cider vinegar need to be diluted prior to consumption.

That’s because vinegar is exceptionally acidic, and also exposure to large amounts of undiluted vinegar can erode her tooth enamel, and irritate your esophagus and the lining of her digestive street (7, 8).

One study in healthy and balanced adults listed tooth erosion was existing after just 8 weeks of taking 2 tablespoons (30 mL) the vinegar diluted in 1 cup (240 mL) of water twice daily. Because that this reason, it might be wise to dilute the vinegar even more than this (7).

Try diluting at many 1 tablespoon (15 mL) that vinegar into 8 ounces (240 mL) of water to do it much safer to drink. If it’s tho too strong for your taste, you can dilute it even further.

If you’d like to defend your teeth even more from the vinegar’s acidity, you deserve to drink the diluted apple cider vinegar v a straw or take it in capsule form.


You have to dilute apple cider vinegar before drinking it. It’s really acidic and can damage your tooth enamel and digestive tract. You can dilute 1 tablespoon (15 mL) of apple cider vinegar into 1 cup (240 mL) that water.

Both supplementing v apple cider vinegar and fasting are approaches to aid control blood sugar levels and also promote load loss, so many human being use them in combination.

Some research says that apologize cider vinegar may assist you feel more full, which have the right to be very helpful during a fast.

If you want to add apple cider vinegar to her fasting routine, stick to 1–2 tablespoons (15–30 mL) per day, and make certain to dilute the vinegar in many of water.

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Overall, a little bit of to apologize cider vinegar every day might aid make her fast an ext manageable.