Captopril is taken three times a day one hour before three meals, mainly because food in the stomach causes a 30-40% reduction in the absorption of this product. The drug should be taken under the supervision of a physician, and the dosage line follows the principle of individualization, adjusting the dosage according to the efficacy of the drug. Captopril is an angiotensin-converting enzyme inhibitor, a short-acting antihypertensive drug that can also be used to treat heart failure and improve myocardial remodeling. The drug may cause a rash with itching, often at the beginning of the medication, which may improve after dosage reduction, discontinuation, or antihistamine treatment, as well as palpitations, cough, and hypotension. The drug may also increase blood potassium, when combined with potassium-preserving diuretics such as spironolactone, aminopterin, etc. should also monitor blood potassium. Use this product with caution in patients with reduced renal function. Avoid combining with indomethacin, which will inhibit the antihypertensive effect. The antihypertensive effect is enhanced when combined with beta-blockers, and blood pressure should be monitored. Avoid blind use. Allergic to this product is prohibited. If there is any discomfort, consult a doctor in time, follow the doctor’s instructions to use, do not self-medication.