Drug interactions
Atenolol-chlorthalidone + Magnesium sulfate
Severity: Minor
Atenolol-chlorthalidone and Magnesium sulfate: 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
Chlorthalidone increases urinary magnesium loss, which may lower magnesium levels and partly counteract supplemental magnesium. Clinical impact is generally small, though in patients receiving intravenous magnesium sulfate, beta-blockers may add to hypotension or bradycardia.
What this interaction means in plain words
Atenolol-chlorthalidone and Magnesium sulfate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Why it happens
Thiazide-like diuretics increase renal magnesium excretion; magnesium and beta-blockers can have additive cardiovascular depressant effects.
What to do
Monitor serum magnesium and electrolytes in patients on long-term diuretic therapy. During intravenous magnesium infusion, monitor heart rate and blood pressure.
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 Atenolol-chlorthalidone
Frequently asked questions
Can I take Atenolol-chlorthalidone with Magnesium sulfate?
MediHelp rates the interaction as minor. Atenolol-chlorthalidone and Magnesium sulfate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Chlorthalidone increases urinary magnesium loss, which may lower magnesium levels and partly counteract supplemental magnesium. Clinical impact is generally small, though in patients receiving intravenous magnesium sulfate, beta-blockers may add to hypotension or bradycardia.
How serious is the interaction between Atenolol-chlorthalidone and Magnesium sulfate?
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 serum magnesium and electrolytes in patients on long-term diuretic therapy. During intravenous magnesium infusion, monitor heart rate and blood pressure.
What other medicines interact with Atenolol-chlorthalidone?
MediHelp also lists interactions of Atenolol-chlorthalidone with, for example, Acebutolol, Aldesleukin, Amiodarone. The full list is on the Atenolol-chlorthalidone page.
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