Terazosin is primarily used to treat symptoms of an enlarged prostate (benign prostatic hyperplasia) by relaxing the muscles in the bladder and prostate, improving urine flow and reducing discomfort. It is also prescribed to manage high blood pressure (hypertension) by relaxing blood vessels, allowing blood to flow more easily and lowering blood pressure. This dual action makes it effective in addressing both urinary and cardiovascular issues. Patients taking terazosin are often advised to monitor their blood pressure regularly and report any side effects, such as dizziness or fainting, especially when starting the medication. It is typically taken orally, once daily, often at bedtime to minimize the risk of dizziness.