Oral potassium chloride is a treatment for hypokalemia in clinical practice. By taking oral potassium chloride, the concentration of K+ in the blood can be increased, thus improving the series of symptoms caused by hypokalemia. Precautions for oral potassium chloride include: i. Only patients diagnosed with hypoglycemia can take oral potassium chloride, if the blood potassium concentration is normal or high, they cannot take oral potassium chloride treatment. Second, oral potassium chloride has a certain stimulating effect on the digestive tract, and some people may suffer from nausea and epigastric pain when taking it on an empty stomach. Therefore, it is best to take oral potassium chloride after or during a meal to reduce the side effects on the digestive tract. Third, the maximum daily dose of oral potassium chloride should not exceed 6 grams, and the K+ concentration should be reviewed in time, and if the K+ concentration is normal, it needs to be stopped in time.