Potassium Chloride Extended-Release Tablets have the effect of replenishing the body’s potassium level, and are mainly used for the treatment and prevention of hypokalemia with or without metabolic alkalosis, when the patient’s dietary management through potassium-rich foods or the reduction of diuretic dosage is not efficacious. Adverse reactions to potassium chloride extended-release tablets include gastrointestinal irritation such as nausea, vomiting, pharyngeal discomfort, chest pain, flatulence, abdominal pain, diarrhea, and even peptic ulcers, hemorrhage, perforation, and obstruction; the above symptoms are more likely to occur on an empty stomach, at high doses, and in patients suffering from gastrointestinal disorders; and hyperkalemia, urticaria, skin rash, and pruritus. The use of medication should be noted that patients allergic to potassium chloride extended-release tablets and its contained ingredients is prohibited, suffering from hyperkalemia, little urine or urinary closure, the use of potassium-preserving diuretics is prohibited, pregnant women and lactating women should be used after weighing the pros and cons of the use of children’s medication is not yet clear. In addition, metabolic acidosis with oliguria, adrenocortical function, acute dehydration, acute and chronic renal insufficiency, familial periodic paralysis, gastrointestinal disorders, conduction block arrhythmia, extensive burns, muscle trauma, severe infections, postoperative 24 hours, and severe hemolysis, congenital adrenocorticotropic hyperplasia with insufficient secretion of hydrocorticotropic hormone, and other patients should be used with caution. If you need to use potassium chloride extended-release tablets patients, it is recommended to consult a professional doctor, follow the doctor’s instructions to standardize the treatment, not blindly use their own medication.