Prazosin is used to treat trouble peeing in men. It is also used for other conditions such as high blood pressure.
Take prazosin regularly as directed with a glass of water.
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.
Some medicines available without a prescription may react with prazosin including:
Tell your pharmacist or doctor about all medicines or treatments that you may be taking, including vitamins, herbal products or recreational drugs.
|Side Effects||Recommended action|
Prolonged erection (longer than four hours)
|Tell your doctor immediately|
Change in heartbeat
Short of breath
|Tell your doctor|
Swollen feet or legs
Tiredness or weakness, low mood
Runny or blocked nose
Peeing more often
Dry mouth, 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.
This leaflet contains important, but not all, information about this medicine.
Prepared by the PILs Committee at Christchurch Hospital, Canterbury District Health Board, New Zealand. January 2020
For more general information about this sheet annd its contents, see: What does a My Medicines sheet cover?
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My Medicines Patient Information Leaflets (PILs) contain important, but not all, information about the medicines they describe.
For more information about the sheets, see: What does a My Medicines sheet cover?
My Medicines is developed by a team at the Canterbury District Health Board. Our team is made up of doctors, pharmacists, and a non-medical person to help us keep to plain language. We also discuss our information with specialist health professionals or groups when needed