Drug interactions
Atenolol-chlorthalidone + Sodium bicarbonate
Severity: Minor
Atenolol-chlorthalidone and Sodium bicarbonate: 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
Antacids such as sodium bicarbonate may reduce oral absorption of atenolol, and can decrease its beta-blocking effect. The effect is generally modest and avoidable with timing.
What this interaction means in plain words
Atenolol-chlorthalidone and Sodium bicarbonate 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-chlorthalidone belongs to Cardiovascular; Sodium bicarbonate belongs to Gastrointestinal Tract.
Why it happens
Raised gastric pH and possible binding reduce atenolol absorption.
What to do
Separate oral sodium bicarbonate from atenolol-chlorthalidone by about 2 hours, and 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
Other interactions of Sodium bicarbonate
- Acetylsalicylic acid + Sodium bicarbonate Moderate
- Alendronate + Sodium bicarbonate Moderate
- Amantadine + Sodium bicarbonate Moderate
- Carbonyl iron + Sodium bicarbonate Moderate
- Cefditoren + Sodium bicarbonate Moderate
- Cefpodoxime + Sodium bicarbonate Moderate
Frequently asked questions
Can I take Atenolol-chlorthalidone with Sodium bicarbonate?
MediHelp rates the interaction as minor. Atenolol-chlorthalidone and Sodium bicarbonate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Antacids such as sodium bicarbonate may reduce oral absorption of atenolol, and can decrease its beta-blocking effect. The effect is generally modest and avoidable with timing.
How serious is the interaction between Atenolol-chlorthalidone and Sodium bicarbonate?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Separate oral sodium bicarbonate from atenolol-chlorthalidone by about 2 hours, and 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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