atenolol vs tamsulosin
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Side-by-side comparison of atenolol and tamsulosin. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
minor Known Drug Interaction
7.5 Nifedipine, Atenolol, Enalapril Dosage adjustments are not necessary when tamsulosin hydrochloride capsules are administered concomitantly with nifedipine, atenolol, or enalapril [see Clinical Pharmacology (12.3)].
Tenormin
Flomax
Atenolol is a medicine that lowers blood pressure. It can also help with chest pain and after a heart attack.
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.
Atenolol is used to treat high blood pressure (hypertension). Lowering blood pressure reduces the risk of strokes and heart attacks. Atenolol is also used long-term for chest pain (angina) caused by narrowed arteries. It can also help people who have had a heart attack.
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.
Atenolol is a beta-blocker that mainly affects the heart. It works by blocking the effects of certain chemicals in your body that raise heart rate and blood pressure. This helps your heart beat slower and with less force, lowering blood pressure.
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
- • Tiredness
- • Fatigue
- • Diarrhea
- • Nausea
- • Headache
- • Dizziness
- • Runny nose
- • Infection
- • Abnormal ejaculation
- Nausea 7,813
- Fatigue 7,573
- Diarrhoea 6,999
- Dyspnoea 6,276
- Dizziness 6,246
- Fatigue 1,417
- Dyspnoea 1,332
- Dizziness 1,131
- Diarrhoea 1,121
- Headache 883
You should not take atenolol if you have a very slow heart rate, a serious heart block, cardiogenic shock, or heart failure. Atenolol can make these conditions worse. Tell your doctor right away if you feel dizzy or lightheaded, or if your heart rate becomes very slow.
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.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if atenolol will harm your unborn baby. Talk to your doctor about the risks and benefits of taking atenolol while pregnant or breastfeeding.
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 atenolol vs tamsulosin Comparison
atenolol is classified in the Beta-1 Selective Blocker 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, atenolol has 34,907 submissions while tamsulosin has 5,884. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to these two medicines do not interfere with each other in a way that changes how they work in the body.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.
A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for atenolol or tamsulosin.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.