Drinking vinegar has no therapeutic effect on hiccups, which are mainly a reaction caused by spasm and contraction of the diaphragm due to irritation. Many people experience hiccups as a result of gastritis, gastric ulcer, duodenal ulcer, indigestion, etc. If these diseases are not treated in a timely manner, hiccups will occur frequently. In the treatment of these stomach diseases, the main purpose is to use drugs that inhibit the secretion of gastric acid, protect the gastric mucosa, and promote the emptying of food from the stomach, such as omeprazole, colloidal bismuth pectin, and domperidone. You can also drink warm boiled water appropriately when you have hiccups to promote local blood circulation and relieve local spasm, thus eliminating the symptoms of hiccups. Vinegar is an acidic condiment that not only has no therapeutic effect on stomach diseases, but also increases the secretion of stomach acid, which has a negative effect on stomach diseases, and drinking vinegar has no conditioning effect on smooth muscle spasm, so it has no therapeutic effect on hiccups.