alfuzosin vs tamsulosin
Side-by-side comparison of alfuzosin and tamsulosin Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Uroxatral
Flomax
Alfuzosin is a medicine that helps men with enlarged prostate glands. It relaxes the muscles in the prostate and bladder, making it easier to urinate.
Tamsulosin (Flomax) helps to improve urination in men with enlarged prostate glands. It relaxes the muscles in the prostate and bladder, making it easier to urinate.
This medicine treats the symptoms of benign prostatic hyperplasia (BPH), also known as an enlarged prostate. BPH can cause problems with urination, such as difficulty starting or stopping, frequent urination, and feeling like you can't empty your bladder. Alfuzosin helps to improve these symptoms.
This medicine treats the symptoms of an enlarged prostate, also known as benign prostatic hyperplasia (BPH). BPH can cause problems with urination, like difficulty starting or stopping the flow of urine. Tamsulosin helps to relieve these symptoms.
Alfuzosin belongs to a class of drugs called alpha-1 blockers. It works by relaxing the muscles in the prostate and bladder neck. This relaxation allows urine to flow more freely, relieving the symptoms of BPH.
Tamsulosin blocks alpha-1 adrenoceptors in the prostate and bladder. These receptors control muscle tightness. By blocking them, tamsulosin relaxes the muscles, which improves urine flow.
- • Dizziness
- • Upper respiratory tract infection
- • Headache
- • Fatigue
- • Headache
- • Dizziness
- • Runny nose
- • Infection
- • Abnormal ejaculation
- The medicine is not working 112
- Using the medicine for something it's not approved for 96
- Difficulty breathing 89
- The medicine is interacting with another medicine 87
- Tiredness 87
- Tiredness 1,417
- Shortness of breath 1,332
- Feeling lightheaded 1,131
- Loose stools 1,121
- Using the medicine for something it's not approved for 961
Alfuzosin can cause your blood pressure to drop suddenly when you stand up, leading to dizziness or fainting. Be careful when standing up quickly, especially when you first start taking this medicine. If you have chest pain (angina), tell your doctor immediately. This medicine may also affect your heart rhythm. Tell your doctor if you have a history of heart problems.
Tamsulosin can cause a sudden drop in blood pressure when you stand up, leading to dizziness or fainting. Avoid situations where you could get hurt if you faint. Tell your eye doctor if you are planning to have cataract or glaucoma surgery, as tamsulosin can cause complications during the procedure. You should be screened for prostate cancer before starting tamsulosin and regularly after.
This medicine is only for men and is not intended for use in women. It is not known if alfuzosin can harm an unborn baby or pass into breast milk.
This medicine is only for men. It is not meant to be used by women. There is no information about the safety of tamsulosin during pregnancy or breastfeeding because it is not used in women.
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How to Read This alfuzosin vs tamsulosin Comparison
alfuzosin is classified in the Alpha-1 Blocker (BPH) drug class, while tamsulosin sits within the Alpha-1 Adrenergic Blocker class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.
Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, alfuzosin has 471 submissions while tamsulosin has 5,962. Those figures reflect cumulative reporting volume — not per-patient risk — so older, widely dispensed drugs typically look worse on count alone. No direct interaction between these two drugs is listed in our FDA-derived dataset, though co-prescription still warrants pharmacist review. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between alfuzosin and tamsulosin — always consult your physician or pharmacist first.
Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.