Irbesartan is already included in Irbesartan Hydrochlorothiazide, and there is no need to take the two together; Irbesartan Hydrochlorothiazide is used in patients who do not do well on monotherapy. Irbesartan Hydrochlorothiazide is a combination preparation, mainly used in the treatment of hypertension. It contains both Irbesartan and Hydrochlorothiazide and is used to treat patients whose blood pressure is not effectively controlled by Irbesartan or Hydrochlorothiazide alone, and therefore does not need to be combined with Irbesartan. Common adverse reactions after taking Irbesartan Hydrochlorothiazide include fatigue, dizziness, nausea, vomiting, abnormal urination, etc. It is contraindicated in the 4th to 9th month of pregnancy, breastfeeding women, those who are allergic to the product, and anuric patients. Adverse reactions after the use of Irbesartan include dizziness, cough, flushing, nausea, etc. It is contraindicated in the 4th to 9th month of pregnancy, nursing women and those who are allergic to Irbesartan. Please use the drug under the guidance of a physician, do not blindly combine drugs on your own.