What does it do?

Doxazosin is used to treat trouble peeing in men caused by an enlarged prostate. It is also used for other conditions such as high blood pressure.

How should you take it?

Take doxazosin regularly as directed with a glass of water.

What if you forget a dose?

Take the missed dose as soon as possible. If it is close to the time for your next dose, skip the missed dose and carry on as normal. Do not take two doses at the same time.

Can you take other medicines?

Some medicines available without a prescription may react with doxazosin including:

• sildenafil (e.g. Viagra®) or similar medicines

Tell your pharmacist or doctor about all medicines or treatments that you may be taking, including vitamins, herbal products or recreational drugs.

What side effects might you notice?

Side Effects	Recommended action
Chest pain Prolonged erection (longer than four hours)	Tell your doctor immediately
Headache, dizziness Change in heartbeat Short of breath	Tell your doctor
Swollen feet or legs Tiredness or weakness Blurred vision Runny or blocked nose Stomach upset	Tell your doctor if troublesome
Lightheaded or dizzy after standing up	Stand up slowly. If it continues, or is severe, tell your doctor

If you notice any other effects, discuss them with your doctor or pharmacist.

Other information:

• Tell your doctor if you have problems with dizziness, liver or heart problems, or prostate cancer.
• Tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding.
• Doxazosin can impair your ability to do tasks such as driving or using machines. Alcohol makes this worse. Discuss your risk with your health professional. (search NZTA - Are you safe to drive?)
• If you are having eye surgery (e.g. cataract operation), tell your doctor that you are taking doxazosin.
• Do not stop taking doxazosin without talking to your doctor first.