ACV Side Effects
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ACV Side Effects - Editor's Choice

| Modified on May 22, 2025
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Apple Cider Vinegar Side Effects

While apple cider vinegar is perhaps the most popular natural remedy in modern times, ACV can also cause severe side effects like anxiety, heart rhythm abnormalities, dizziness, panic attacks and more.

Thousands of our readers have found relief from using apple cider vinegar for conditions such as GERD, arthritis, weight problems, high blood pressure, heartburn, PMS, acne, diarrhea, vomiting. At the same time, every person is different. Earth Clinic readers have reported side effects including an increase in acne, decrease in libido, nausea, dizziness, increase in blood pressure, flu-like symptoms, constipation, diarrhea, sleepiness, and swelling.

To avoid side effects from apple cider vinegar, start with less and increase the dose. It is also best to add only one change at a time to your health regiment so that you can monitor its effect on your body. Everyone is different.

Learn important information about Apple Cider Vinegar in Earth Clinic's new video.

Why Does Apple Cider Vinegar Cause Side Effects In Some People and Not In Others?

Because apple cider vinegar is a powerful detoxifying remedy, side effects from ACV can occur if the body goes into a weakened state when it is leached of important minerals like magnesium and potassium during the detoxification period. Loss of vital magnesium can lead to ailments such as heart palpitations, arrhythmia and atrial fib. Loss of potassium can lead to blood pressure issues.

Could I Be Allergic to Apple Cider Vinegar?

Apple cider vinegar is high in histamines, a chemical that is released by cells in response to injury and in allergic and inflammatory reactions. For histamine-sensitive people, this can be very problematic. Research suggests that high levels histamines are associated with anxiety or panic attacks.

High histamine symptoms include:

  • Anxiety
  • Dizziness
  • Nausea
  • Vomiting
  • Headaches
  • Hypertension
  • Arrhythmia

How Can I Cure Side Effects From Apple Cider Vinegar?

If you are experiencing side effects from drinking apple cider vinegar, stop drinking any and all vinegar immediately. Symptoms should begin to abate in 24 hours. Drink plenty of water during this time. Make sure you do not accidentally consume any additional vinegar in your diet, like salad dressing, for example. Also, soy sauce should be avoided as it can also cause a high histamine response and trigger additional heart rhythm issues.

One of the best supplements you can take to cure side effects from ACV is Magnesium.  Magnesium L-Threonate is an excellent form of magnesium and easy on the stomach. Powdered magnesium like Calm is also helpful, just don't take too much at one time or you will get diarrhea!

Continue reading to learn all the reported side effects from our readers. You might find one post in particular that exactly matches your symptoms, solving the mystery of why you feel so badly.


The comments below reflect the personal experiences and opinions of readers and do not represent medical advice or the views of this website. The information shared has not been evaluated by the FDA and is not intended to diagnose, treat, or prevent any disease or health condition. Always consult a qualified healthcare professional for medical concerns.

Apple Cider Vinegar Side Effects

Posted by Deirdre (Atlanta, GA) on 06/20/2010

Editor's Choice

In addition to the side effects I reported recently re Hyaluronic Acid, a new sensitivity to apple cider vinegar has developed after many, many years of drinking it on and off. I am becoming quite sensitive as I age, I guess.

I recently had to stop taking my favorite remedy on Earth Clinic due to multiple and at times severe side effects: heart palpitations, dizziness, vertigo, light headedness, anxiety, and panic attacks in the car (due to feeling dizzy). Hard to believe these side effects were caused by a benign home remedy such as vinegar, but it's true. I know other people on the site have reported similar symptoms over the years and I am wondering if they were also drinking apple cider vinegar!

It took me many months to figure out that apple cider vinegar (acv) was the cause of these symptoms because I only took it intermittantly. As soon as I'd start having symptoms, I'd stop drinking acv, caffeine and any food or drink that I thought might be causing the issues. What threw me for a loop however, was that a few of my symptoms (light headedness, dizziness) would continue for another 7-10 days. That's how long it took to leave my system! I knew it had to be something I was eating, drinking or taking (supplements, home remedies, etc), but the exact trigger eluded me.

My doctor finally had me wear a heart monitor for 2 days to figure out what was going on. I was told to try and trigger the palpitations. That was very easy... all I did was drink 2 teaspoons of apple cider vinegar in water and the palpitations (pre-atrial contractions to be exact) began 20 minutes later. Once the palpitations started after drinking the acv, I exacerbated my symptoms with cardio exercise, caffeine, and an acupuncture session where needles were placed in the heart meridian. All confirmed with my heart monitor test. Alone, neither caffeine nor acupuncture nor exercise caused any symptoms. However, in conjunction with acv, big problem.

I haven't touched acv other than topically in 6 weeks and guess what, absolutely no symptoms! What a relief to finally know the cause.

I love this remedy. In fact as you many of you know, it was the very first one on Earth Clinic. I am saddened to have to stop taking what I believe is one of the best home remedies on this site. However, I wanted people to be aware of potential side effects. Thankfully, I had a 20 year run of drinking apple cider vinegar regularly without any side effects!