Sodium bicarbonate tablets are usually taken about half an hour before meals. Sodium bicarbonate tablets are antacids used for the treatment of hyperacidity, and according to the dosage instructions are alkaline drugs that can neutralize stomach acid and play a role in treating diseases and relieving symptoms. Sodium bicarbonate tablets are recommended to be taken half an hour before meals because eating when the blood concentration of the drug reaches its highest level is more effective in improving the efficacy of the drug and protecting the gastric mucosa. Its adverse reaction is that the carbon dioxide produced when neutralizing gastric acid may cause hiccups and secondary increase in gastric acid secretion, so pay attention to whether there is stomach distension, stomach pain and other discomforts occur when taking it. Sodium bicarbonate tablets are contraindicated in those who are allergic to sodium bicarbonate tablets and its constituents. If you find abdominal pain, diarrhea, headache and so on during the process of taking the drug, you should stop using it in time. In addition, it is recommended to consult a doctor or pharmacist at a professional hospital if there is any doubt about the use of the drug, so as to avoid self-administration or self-adjustment of the dose of the drug, which may lead to the occurrence of undesirable consequences.