Alfuzosin is an alpha-adrenergic (AL-fa ad-ren-ER-Jk) blocker. Alfuzosin helps relax the muscles in the prostate and bladder neck, making it easier to urinate.
Alfuzosin is used to improve urination in men with benign prostatic hyperplasia (enlarged prostate).
Alfuzosin may also be used for purposes not listed in this medication guide.
You should not take alfuzosin if you have moderate to severe liver disease.
Many drugs can affect alfuzosin, and some should not be used at the same time. Tell your doctor about all your current medicines and any you start or stop using.
Alfuzosin lowers blood pressure and may cause dizziness or fainting, especially if you take heart or blood pressure medications. Avoid driving or hazardous activity until you know how alfuzosin will affect you.
Call your doctor at once if you have a light-headed feeling, like you might pass out.
You should not take alfuzosin if you are allergic to it, or if you have:
moderate to severe liver disease.
Some medicines can cause unwanted or dangerous effects when used with alfuzosin. Your doctor may change your treatment plan if you also use:
antiviral medicine to treat hepatitis C or HIV/AIDS; or
medicines similar to alfuzosin (doxazosin, prazosin, silodosin, tamsulosin, or terazosin).
Tell your doctor if you have ever had:
low blood pressure, especially if caused by taking medications;
prostate cancer; or
long QT syndrome (in you or a family member).
Alfuzosin can affect your pupils. If you have cataract surgery, tell your surgeon ahead of time that you use this medicine.
Alfuzosin is not for use in women, and the effects of this medicine during pregnancy or in breastfeeding women are unknown.
Alfuzosin is not approved for use by anyone younger than 18 years old.
Alfuzosin Side Effects
Dizziness or lightheadedness may occur. If either of these effects persists or worsens, tell your doctor or pharmacist promptly.
To reduce the risk of dizziness and lightheadedness, get up slowly when rising from a sitting or lying position.
Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.
Get medical help right away if you have any very serious side effects, including: severe dizziness, fainting, fast/irregular heartbeat, chest pain.
Rarely, males may have a painful or prolonged erection lasting 4 or more hours. If this occurs, stop using this drug and get medical help right away, or permanent problems could occur.
A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
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