Doxazosin Mesylate

Medically Reviewed by Dr. Harshi Dhingra, M.D.

Last Reviewed: Apr 15, 2024

Side Effects


Doxazosin (Cardura) Side Effects

Possible side effects of doxazosin are listed below. Call your doctor for medical advice about side effects if they are severe or continue after a few days.

  • Headache
  • Unusual tiredness
  • Weight gain
  • Swelling of the hands, lower legs, ankles, or feet
  • Muscle pain or muscle weakness
  • Joint pain
  • Runny nose
  • Vision changes
  • Decreased sexual ability

Rarely doxazosin can cause some very serious side effects. Call your doctor right away or seek immediate medical attention in the emergency room if you develop the following symptoms:

  • Skin rash, hives, itching
  • Chest discomfort or pain
  • Rapid, pounding, or irregular heartbeat
  • Shortness of breath or trouble breathing
  • Severe ongoing stomach pain
  • Painful or prolonged erection

The above list may not include all the potential side effects of doxazosin. Call your doctor if the side effects are unusual, severe, or persistent. You can also report an unusual or allergic reaction to the Food and Drug Administration at 1-800-FDA-1088.

Doxazosin Overdose: In case of an overdose, call your doctor immediately. You can also call your local poison control center, provincial poison control center, or the national poison control center at 1-800-222-1222. Call 911 if someone has lost consciousness, collapsed, stopped breathing, or had a seizure. Signs and symptoms of an overdose may include drowsiness, dizziness, lightheadedness, fainting, and seizures.

Source: FDA