Drug interactions
Chloral hydrate + Pentobarbital
Severity: Major
Chloral hydrate and Pentobarbital: major interaction.
Last updated Sources: US FDA label
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
Both are sedative-hypnotics, so together they can produce deep sedation and respiratory depression. Both also affect hepatic enzyme activity, so effects may be prolonged in some patients.
What this interaction means in plain words
Chloral hydrate and Pentobarbital can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Additive GABA-A receptor-mediated CNS depression.
What to do
Avoid concurrent use where possible; if used, reduce doses and monitor respiratory status and sedation level.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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References
Other interactions of Chloral hydrate
- Calcium / magnesium / potassium / sodium oxybates + Chloral hydrate Contraindicated
- Chloral hydrate + Sodium oxybate Contraindicated
- Alfentanil + Chloral hydrate Major
- Alprazolam + Chloral hydrate Major
- Amobarbital + Chloral hydrate Major
- Belladonna and opium + Chloral hydrate Major
Frequently asked questions
Can I take Chloral hydrate with Pentobarbital?
MediHelp rates the interaction as major. Chloral hydrate and Pentobarbital can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both are sedative-hypnotics, so together they can produce deep sedation and respiratory depression. Both also affect hepatic enzyme activity, so effects may be prolonged in some patients.
How serious is the interaction between Chloral hydrate and Pentobarbital?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use where possible; if used, reduce doses and monitor respiratory status and sedation level.
What other medicines interact with Chloral hydrate?
MediHelp also lists interactions of Chloral hydrate with, for example, Calcium / magnesium / potassium / sodium oxybates, Sodium oxybate, Alfentanil. The full list is on the Chloral hydrate page.
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