Although ACV is used as a natural remedy for colds, it can come with no possible side effects. Amy Shah, MD, a dual board certified doctor, notes that if you overdo it, you may experience upset stomach and gas. If you are new to ACV, start slowly and do not take too much at once. Typically, you never want to go over 8 ounces a day (which is more than you need anyway).
There is a theory that the acetic acid in the ACV can also erode tooth enamel, making you more prone to cavities. It is worth noting that the study showed these results tested teeth in a laboratory setting and does not take into account natural buffers in your saliva that protect your teeth from acids. Even so, it’s important to acknowledge. You can protect yourself from the possible negative effects of ACV on your teeth by rinsing your mouth with water immediately after taking it and waiting for at least 20 minutes to brush your teeth.
Apple cider vinegar can also interact with certain medications, such as insulin, diuretics, or potassium-lowering drugs. If you are on any medication, always check with your doctor before adding anything new like ACV to your routine.