Drug interactions
Atenolol-chlorthalidone + Pentobarbital
Severity: Minor
Atenolol-chlorthalidone and Pentobarbital: 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
Barbiturates induce hepatic enzymes and can lower levels of beta-blockers that are metabolized by the liver. Atenolol is mostly renally eliminated, so any reduction is likely small. Additive sedation and hypotension may also occur.
What this interaction means in plain words
Atenolol-chlorthalidone and Pentobarbital 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
Hepatic enzyme induction, with limited relevance for the renally cleared atenolol; additive CNS depression and hypotension.
What to do
Monitor heart rate and blood pressure and adjust atenolol only if response is reduced. Watch for excess sedation or hypotension.
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 Pentobarbital?
MediHelp rates the interaction as minor. Atenolol-chlorthalidone and Pentobarbital have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Barbiturates induce hepatic enzymes and can lower levels of beta-blockers that are metabolized by the liver. Atenolol is mostly renally eliminated, so any reduction is likely small. Additive sedation and hypotension may also occur.
How serious is the interaction between Atenolol-chlorthalidone and Pentobarbital?
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 heart rate and blood pressure and adjust atenolol only if response is reduced. Watch for excess sedation or hypotension.
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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