Drug interactions
Atenolol + Metolazone
Severity: Minor
Atenolol and Metolazone: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Metolazone and atenolol are frequently used together for hypertension and the pair gives additive blood pressure lowering. Metolazone may cause hypokalemia and hyperglycemia, and beta-blockers can mask hypoglycemia symptoms in diabetic patients.
What this interaction means in plain words
Atenolol and Metolazone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Atenolol belongs to Cardiovascular; Metolazone belongs to Cardiovascular.
Why it happens
Additive antihypertensive pharmacodynamic effects; thiazide-induced metabolic changes (hypokalemia, glucose elevation) may be relevant.
What to do
Monitor blood pressure, heart rate and serum potassium, and check glucose control in diabetic patients.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Metolazone
Other interactions of Atenolol
- Amifostine + Atenolol Major
- Amiodarone + Atenolol Major
- Atenolol + Atenolol-chlorthalidone Major
- Atenolol + Betaxolol Major
- Atenolol + Bisoprolol Major
- Atenolol + Carvedilol Major
Frequently asked questions
Can I take Atenolol with Metolazone?
MediHelp rates the interaction as minor. Atenolol and Metolazone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Metolazone and atenolol are frequently used together for hypertension and the pair gives additive blood pressure lowering. Metolazone may cause hypokalemia and hyperglycemia, and beta-blockers can mask hypoglycemia symptoms in diabetic patients.
How serious is the interaction between Atenolol and Metolazone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure, heart rate and serum potassium, and check glucose control in diabetic patients.
What other medicines interact with Metolazone?
MediHelp also lists interactions of Metolazone with, for example, Amifostine, Amlodipine-hydrochlorothiazide-valsartan, Amlodipine-olmesartan-hydrochlorothiazide. The full list is on the Metolazone page.
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