The correct name of Olmesartan Antihypertensive Tablets is Olmesartan Ester Tablets and its main effect is the treatment of high blood pressure. Olmesartan ester is a precursor drug that is hydrolyzed to olmesartan after absorption through the gastrointestinal tract. Olmesartan is a selective angiotensin II type 1 receptor (AT1) antagonist, which blocks the vasoconstrictor effect of angiotensin II by selectively blocking the binding of angiotensin II to the AT1 receptor of vascular smooth muscle, thus achieving the anti-hypertensive effect. Adverse reactions to olmesartan antihypertensive tablets include dizziness, back pain, bronchitis, elevated creatine phosphokinase levels, diarrhea, headache, hematuria, hyperglycemia, hypertriglyceridemia, flu-like symptoms, pharyngitis, rhinitis, sinusitis, and other symptoms. In addition, it is contraindicated in patients who are allergic to the components of the drug in Olmesartan Antihypertensive Tablets, and it is forbidden to use it in combination with Aliskiren in diabetic patients. The drug can cause harm to the fetus when used by pregnant women, and the safety of the drug for nursing women and children under six years of age is not clear. If you need to use Olmesartan antihypertensive tablets, it is recommended to consult a professional doctor, follow the doctor’s instructions for standardized treatment, not blindly use their own medication.