Cordova is the trade name and its generic name is Doxazosin Mesylate Extended-Release Tablets. The drug inhibits sympathetic alpha 1 receptors, which inhibits peripheral vasoconstriction and prostate contraction, and is used to treat hypertension and symptoms associated with benign prostatic hyperplasia. Adverse effects such as fatigue, myalgia, chest pain, cystitis, urinary incontinence, pruritus, peripheral edema, and postural hypotension may occur after administration. The drug should be swallowed whole, not chewed and crushed, etc. There is a non-absorbable shell in the drug, so the tablets can occasionally be seen in the stool, no need to worry. No adverse drug interactions have been observed in combination with other drugs. It is contraindicated in patients with a history of gastrointestinal obstruction or any degree of narrowing of the luminal diameter of the gastrointestinal tract; in patients who have had a recent myocardial infarction; and in those who are allergic to the drug or to quinazolines. Use with caution in patients with hepatic insufficiency. If you need to use the drug patients, please under the guidance of a doctor strictly follow the instructions of the doctor to take medication, do not self-medication.