Olmesartan ester amlodipine tablets belong to a combination of angiotensin II antagonists. Olmesartan ester amlodipine tablets are used for the treatment of essential hypertension. It is a combination of Olmesartan ester, an angiotensin II receptor antagonist, and Amlodipine, a dihydropyridine calcium channel blocker. Amlodipine blocks the transmembrane entry of calcium ions into vascular smooth muscle and myocardium, and olmesartan ester blocks the vasoconstrictor effect of angiotensin II, resulting in a blood pressure lowering effect. Adverse effects include dizziness, headache, palpitations (rapid heartbeat, often accompanied by panic), and hypotension, most of which are mild, transient, and may be alleviated by discontinuation of the drug. It needs to be contraindicated in patients who are allergic to the ingredients contained in the product and dihydropyridine derivatives, during pregnancy, severe hypotension, shock, etc. In addition, patients are advised to use Olmesartan Amlodipine Tablets under the supervision of a doctor and not for private use.