acebutolol vs metolazone
Side-by-side comparison of acebutolol and metolazone Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.
Sectral
Zaroxolyn
Acebutolol is a medicine that helps lower blood pressure and control irregular heartbeats. It belongs to a class of drugs called beta-blockers.
Metolazone is a water pill that helps your body get rid of extra salt and water. It can also lower blood pressure.
Acebutolol is used to treat high blood pressure in adults. It can be used alone or with other blood pressure medicines. Acebutolol is also used to manage irregular heartbeats called ventricular arrhythmias. It helps to reduce the number of these irregular beats.
Metolazone treats water retention (edema) caused by heart failure or kidney problems. This includes conditions like nephrotic syndrome or reduced kidney function. It also treats high blood pressure, and can be used alone or with other blood pressure medicines. A faster-acting form of metolazone (Mykrox) is for new patients with mild to moderate high blood pressure.
Acebutolol works by blocking the effects of certain natural chemicals in your body, like adrenaline, on the heart and blood vessels. This helps to slow down the heart rate and lower blood pressure. It also helps to make the heart beat more regularly.
Metolazone is a diuretic, which means it helps your kidneys remove salt and water from your body. This reduces the amount of fluid in your blood vessels, which can lower blood pressure and reduce swelling. It belongs to a class of drugs called thiazide-like diuretics.
No common side effects listed.
- • Dizziness
- • Lightheadedness
- • Drowsiness
- • Fatigue
- • Weakness
- Problems with thinking or memory 620
- Falling down 615
- Low blood pressure when standing up 573
- Problems with balance 568
- Difficulty passing stools 565
- Difficulty breathing 1,204
- Death 868
- Sudden kidney damage 790
- Feeling sick to your stomach 735
- Kidney failure 712
You should not take acebutolol if you have a very slow heart rate, second- or third-degree heart block, heart failure, or cardiogenic shock.
If you have trouble urinating, are in a hepatic coma or precoma, or are allergic to metolazone, you should not take this medicine. Using diuretics when pregnant can be dangerous to the baby. Only use this medicine during pregnancy if absolutely necessary for a medical condition.
Tell your doctor if you are pregnant or plan to become pregnant. It is not known if acebutolol will harm an unborn baby. Talk to your doctor about the risks and benefits of taking acebutolol while breastfeeding.
Using diuretics during pregnancy can expose the mother and fetus to unnecessary risks. Talk to your doctor about the risks and benefits of taking metolazone while pregnant or breastfeeding. It should only be used if medically necessary.
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How to Read This acebutolol vs metolazone Comparison
acebutolol is classified in the Beta-1 Selective Blocker with ISA drug class, while metolazone sits within the Thiazide-Like Diuretic 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, acebutolol has 2,941 submissions while metolazone has 4,309. 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 acebutolol and metolazone — 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.