According to the actual situation of the patient, timosartan 20 mg can take half a tablet as prescribed by the doctor. Timosartan belongs to the specific angiotensin II receptor antagonist, which can reduce angiotensin II-induced hypertension and is commonly used in the treatment of hypertension. Timosartan dosage can be adjusted according to the individualized level, the general recommendation is that the initial dose is one tablet (20 mg) each time, once a day, and the dosage can be gradually increased according to the effect of lowering blood pressure until the blood pressure is controlled to the desired level, and the maximum dosage is four tablets (80 mg) per day. Elderly people, people with abnormal liver and kidney function, and people who are sensitive to the drug may start taking half a tablet as prescribed by the doctor. Timosartan usually takes about 1 month to achieve maximum therapeutic effect, so pay attention to the time of administration when transferring the drug. Overall, Timosartan adverse reactions are less common, common abdominal pain, dizziness, rash, etc.; allergic to the product, pregnant patients, high blood potassium, renal artery stenosis, serious liver and kidney function abnormalities are prohibited. Timosartan can be used in combination with other antihypertensive drugs with synergistic effect. In summary, timosartan should be taken under the guidance of a doctor, some patients can take half a tablet, and pay attention to monitoring blood pressure, and gradually increase the amount when needed.