The difference between Irbesartan and Benadryl hydrochloride tablets is mainly due to different indications and different antihypertensive mechanisms, as follows. 1. Different indications: Benadryl hydrochloride tablets are mainly used for all stages of hypertension, while congestive heart failure also has an auxiliary therapeutic effect. Irbesartan is mainly used for the treatment of essential hypertension, but also can be used for the treatment of hypertension combined with type 2 diabetic nephropathy, auxiliary relief of proteinuria. 2. Different antihypertensive mechanisms: the antihypertensive mechanism of Benadryl is to inhibit the activity of angiotensin-converting enzyme to lower blood pressure, but also to reduce aldosterone secretion, so that plasma renin activity increases; Irbesartan’s main mechanism of action is to inhibit the angiotensin receptor, so as to achieve the purpose of lowering blood pressure. Benazepril hydrochloride should be noted that if you are allergic to this product or other angiotensin-converting enzyme inhibitor components need to be prohibited, recent patients with angioneurotic edema is prohibited, pregnancy and lactation is prohibited. It should be used with caution in patients with severe systemic lupus erythematosus. Prolonged use of this product may cause insomnia, angioedema, hemolytic anemia, which can be relieved after discontinuation of use. Irbesartan should be taken with the knowledge that if you are allergic to the ingredients of this product and women in the middle and late stages of pregnancy need to be prohibited, and prohibited for breastfeeding women. It should be used with caution in primary aldosteronism. Long-term use of this product may cause dizziness, flushing, dyspepsia, serious symptoms need to stop the drug. Irbesartan or Benazepril Hydrochloride should be taken under the guidance of a medical professional, and should not be taken without authorization.