Generic Alfuzosin

Common use

Alfuzosin is an alpha-blocker. It is used in treatment of benign prostatic hyperplasia in men with an enlarged prostate. It works by blocking receptores in the lower urinary tract, relaxing smooth muscles in the bladder neck and prostate.



Dosage and directions

Use Alfuzosin as prescribed by your doctor. Take it orally with the same meal every day. Avoid splitting, crushing, breaking or chewing it. Swallow it the whole.



Precautions

Use the medicine with caution. It can cause dizziness, drowsiness or lightheadedness. Avoid taking alcohol. Sit up or stand slowly. Avoid situations where injury could occur because of fainting. If chest pain occurs or worsens contact you doctor. If you have to have a surgery especially dental or eye surgery for cataract, tell your doctor that your are using Alfuzosin.

Alfuzosin can cause a prolonged and painful erection.If this in not treated it could lead to impotence and other sexual problems.

It's not recommended to use it during pregnancy or breastfeeding.



Contraindications

You should not use the medicine if you have allergy to it, liver problems and you are taking alpha-blockers, macrolide antibiotics, nefazodone, azole antifungals, HIV pritease inhibitors and telithromycin.



Possible side effects

The most common side effects include drowsiness, dizziness, stomach pain, runny nose, headache, fatigue.

Severe side effects include: Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness); back pain; chest pain; dark urine; decreased sexual ability; fainting; fast or irregular heartbeat; fever, chills, or persistent sore throat; joint pain; painful, prolonged erection; pale stools; severe or persistent dizziness; severe or persistent stomach pain; unusual fatigue or weakness; yellowing of the skin or eyes

Seek medical help if any of the listed above symptoms occurs.



Drug interaction

Tell your doctor if you take the following medicines: azole antifungals, macrolide antibiotics, amiodarone, alpha-blokers, HIV protease inhibitors, nefazodone, nitrates, phosphodiesterase type 5 (PDE5) inhibitors (eg, sildenafil), or telithromycin because the risk of side effects, such as severe low blood pressure, may be increased.



Missed dose

If you miss a dose of Alfuzosin, 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.



Overdose

Symptoms may include fainting , irregular heartbeat. Seek medical attention immediately if you overdosed the medicine.



Storage

Store Alfuzosin at 77 degrees F (25 degrees C) in a tightly closed container. Store away from heat, moisture, and light. Do not store in the bathroom. Keep Alfuzosin out of the reach of children and away from pets.



Disclaimer

We provide only general information about medications which does not cover all directions, possible drug integrations, or precautions. Information at the site cannot be used for self-treatment and self-diagnosis. Any specific instructions for a particular patient should be agreed with your health care adviser or doctor in charge of the case. We disclaim reliability of this information and mistakes it could contain. We are not responsible for any direct, indirect, special or other indirect damage as a result of any use of the information on this site and also for consequences of self-treatment.

Clinical Verification

Last Clinically Updated: August 15, 2026

Written By

Dr. Elena Vance, PharmD

Clinical Specialist in Neuropharmacology

Fact Checked By

Marcus Thorne, MS

Biomedical Data & FDA Label Verification

Medically Reviewed By

Dr. Arthur Campbell, MD

Board-Certified Psychiatrist (ABPN)