Drug interactions
Atenolol-chlorthalidone + Hydrocortisone
Severity: Moderate
Atenolol-chlorthalidone and Hydrocortisone: moderate 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 and systemic corticosteroids both promote potassium loss. Used together they can produce clinically relevant hypokalemia, which raises the risk of arrhythmias, particularly in patients with heart disease or on other QT-prolonging drugs.
What this interaction means in plain words
Atenolol-chlorthalidone and Hydrocortisone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Atenolol-chlorthalidone belongs to Cardiovascular; Hydrocortisone belongs to Endocrine.
Why it happens
Additive renal potassium wasting from thiazide-like diuresis and mineralocorticoid effects of the corticosteroid.
What to do
Monitor serum potassium and magnesium periodically during combined use and replace potassium as needed. Consider a potassium-sparing strategy if hypokalemia persists.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Atenolol-chlorthalidone
Other interactions of Hydrocortisone
- Hydrocortisone + Mifepristone Contraindicated
- Hydrocortisone + Poliovirus vaccine live oral trivalent Contraindicated
- Hydrocortisone + Smallpox vaccine live Contraindicated
- Adenovirus types 4 and 7 live + Hydrocortisone Major
- Aldesleukin + Hydrocortisone Major
- Aspirin + Hydrocortisone Major
Frequently asked questions
Can I take Atenolol-chlorthalidone with Hydrocortisone?
MediHelp rates the interaction as moderate. Atenolol-chlorthalidone and Hydrocortisone can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Chlorthalidone and systemic corticosteroids both promote potassium loss. Used together they can produce clinically relevant hypokalemia, which raises the risk of arrhythmias, particularly in patients with heart disease or on other QT-prolonging drugs.
How serious is the interaction between Atenolol-chlorthalidone and Hydrocortisone?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor serum potassium and magnesium periodically during combined use and replace potassium as needed. Consider a potassium-sparing strategy if hypokalemia persists.
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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