Temisartan from the drug dosage form, you can break open and take half a tablet; from the perspective of treatment of disease, the initial use of the drug or with severe hepatic and renal impairment of patients, can be taken half a tablet as prescribed by the doctor. Timosartan tablets belong to the angiotensin II receptor antagonist, mainly used for the treatment of adult essential hypertension, and can be used in patients aged ≥ 55 years with high risk of cardiovascular disease, and can not accept angiotensin-converting enzyme inhibitor treatment, used to reduce the risk of myocardial infarction, stroke and so on. Timosartan tablets are regular or dispersible tablets, not extended-release or controlled-release dosage forms, and can be broken and taken in halves, or even crushed and taken from the perspective of drug efficacy. The usual size of this drug is 80mg/tablet, and when used to treat high blood pressure, the usual initial dose is 40mg per dose, or half a tablet. When used to reduce cardiovascular risk, the recommended dose is 80mg per dose, once daily. It is not clear whether doses below 80 mg are effective in reducing the risk of cardiovascular morbidity and mortality. This drug should not be used in patients with severe renal impairment. It should be used with caution in patients with impaired hepatic function. Therefore, from the point of view of treating the disease, patients should follow the doctor’s instructions to take the appropriate dose of the drug, and should not blindly reduce the dosage on their own. It should also be noted that some dosage forms of timosartan tablets are 40mg/tablet, and the specifications of the drug should be carefully checked before using the drug, and the effective dosage of each tablet should be paid attention to, rather than simply taking the drug as a half tablet or a tablet.