High pressure, i.e. high systolic blood pressure, or low pressure, i.e. high diastolic blood pressure, can be treated with Irbesartan. Clinically, whether the patient is high diastolic pressure or high systolic pressure is a manifestation of hypertension. Irbesartan is an angiotensin II receptor antagonist, which is a first-line long-acting antihypertensive drug. In addition to its stable antihypertensive effect in the clinic, it also has a certain preventive and therapeutic effect on patients with coronary heart disease, unstable angina or heart failure. Taking this drug can effectively prevent ventricular remodeling, and it can also delay renal function damage and reduce the production of proteinuria. However, some patients may experience adverse reactions such as headache, tinnitus, loss of taste as well as muscle and joint pains, while allergy to the components of the drug as well as pregnancy and lactation are prohibited. Therefore, patients taking Irbesartan should take the correct medication under the guidance of a professional doctor to avoid adverse effects.