Baking soda is used to treat gastric ulcers, mainly by neutralizing stomach acid with the weak alkalinity of baking soda to relieve abdominal pain, acid reflux and heartburn. Therefore, when baking soda is used to treat gastric ulcers, it is important to identify what stage the gastric ulcer is in. If you are in the active stage of gastric ulcer, baking soda is not recommended. Because baking soda can neutralize stomach acid, it can also produce a lot of carbon dioxide, and these gases may induce perforation of the digestive tract. If you are in the recovery period of gastric ulcer, taking baking soda will not have much effect. Patients with gastric ulcer should usually pay attention to avoid overeating, avoid spicy and stimulating foods, and also try to avoid foods or drugs that can easily cause complications.