Sodium bicarbonate, commonly known as baking soda, is an acid-base regulating drug for the body, and its clinical application is mainly reflected in neutralizing the acidic environment, as follows: 1. Treatment of metabolic acidosis: for mild to moderate metabolic acidosis, oral administration is appropriate, and for severe metabolic acidosis, intravenous drip should be given, such as severe kidney disease, circulatory failure, cardiopulmonary resuscitation, extracorporeal circulation and severe primary lactic acidosis, diabetic acidosis; 2. Alkalinization of urine: used for the prevention of uric acid kidney stones, reduce the nephrotoxicity of sulfonamides, and acute hemolysis to prevent hemoglobin deposition in the renal tubules, that is, sodium bicarbonate increases the ph value in the urine, so that uric acid, sulfonamides and hemoglobin are not easy to form crystals or aggregation in the urine; 3, as an acid control drug: oral administration can quickly neutralize or buffer gastric acid without directly affecting gastric acid secretion, so that the ph value in the stomach quickly It is used clinically to relieve stomach pain, heartburn (heartburn) and acid reflux caused by excessive stomach acid, but the effect is weak and the duration is short; 4, intravenous drip has a non-specific therapeutic effect on certain drug poisoning, such as barbiturates, salicylic acid drugs and methanol poisoning. However, the drug is prohibited for gastric lavage when swallowing strong acid poisoning, because the drug and strong acid will produce a large amount of carbon dioxide, and lead to gastric dilatation or even gastric rupture. In addition, the drug should not be taken continuously for more than 7 days, and if the symptoms are not relieved or disappeared, please consult a doctor promptly.