Drug interactions
Atenolol-chlorthalidone + Neostigmine
Severity: Moderate
Atenolol-chlorthalidone and Neostigmine: 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
Neostigmine increases cholinergic tone and can slow heart rate, and atenolol adds to this effect. Significant bradycardia or AV block may occur, particularly when neostigmine is given parenterally for neuromuscular blockade reversal.
What this interaction means in plain words
Atenolol-chlorthalidone and Neostigmine 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; Neostigmine belongs to Central Nervous System.
Why it happens
Additive negative chronotropic effects from cholinesterase inhibition (vagal stimulation) and beta-adrenergic blockade.
What to do
Monitor heart rate and ECG when neostigmine is given, and have an anticholinergic such as glycopyrrolate or atropine available.
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 Neostigmine
Frequently asked questions
Can I take Atenolol-chlorthalidone with Neostigmine?
MediHelp rates the interaction as moderate. Atenolol-chlorthalidone and Neostigmine 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. Neostigmine increases cholinergic tone and can slow heart rate, and atenolol adds to this effect. Significant bradycardia or AV block may occur, particularly when neostigmine is given parenterally for neuromuscular blockade reversal.
How serious is the interaction between Atenolol-chlorthalidone and Neostigmine?
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 heart rate and ECG when neostigmine is given, and have an anticholinergic such as glycopyrrolate or atropine available.
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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