Doxazosin is used for treating high blood pressure and treating signs and symptoms of benign prostatic hyperplasia (BPH). Doxazosin is an alpha-blocker. It works by relaxing muscles in the blood vessels, resulting in lowering of blood pressure. In men with BPH, alpha-blockers work by relaxing muscles around the urethra (the tube that drains urine from the bladder), which improves urinary symptoms.
Use Doxazosin as directed by your doctor.
- Take Doxazosin by mouth with or without food.
- Doxazosin may cause a sudden drop in blood pressure after the first dose. Take your first dose at bedtime. If you get up during the night, sit up slowly, then stand slowly.
- If you miss a dose of Doxazosin, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
Ask your health care provider any questions you may have about how to use Doxazosin.
Store Doxazosin at 77 degrees F (25 degrees C). Brief storage at temperatures between 59 and 86 degrees F (15 and 30 degrees C) is permitted. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Doxazosin out of reach of children and away from pets.