Drug interactions
Caffeine + Chloral hydrate
Severity: Minor
Caffeine and Chloral hydrate: 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
Caffeine is a CNS stimulant and may counteract the sedative effect of chloral hydrate. The clinical impact is variable and typically limited.
What this interaction means in plain words
Caffeine and Chloral hydrate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Caffeine belongs to Miscellaneous; Chloral hydrate belongs to Central Nervous System.
Why it happens
Opposing pharmacodynamic effects; caffeine adenosine receptor antagonism counters sedation.
What to do
Be aware that hypnotic efficacy may be reduced; limit caffeine intake near the time of chloral hydrate dosing.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Caffeine and Chloral hydrate, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 14 days on the web. No card needed.
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
Other interactions of Caffeine
- Caffeine + Ephedrine Major
- Caffeine + Fezolinetant Major
- Caffeine + Methylenedioxymethamphetamine Major
- Caffeine + Selegiline transdermal Major
- Adenosine + Caffeine Moderate
- Benzphetamine + Caffeine Moderate
Frequently asked questions
Can I take Caffeine with Chloral hydrate?
MediHelp rates the interaction as minor. Caffeine and Chloral hydrate have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Caffeine is a CNS stimulant and may counteract the sedative effect of chloral hydrate. The clinical impact is variable and typically limited.
How serious is the interaction between Caffeine and Chloral hydrate?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Be aware that hypnotic efficacy may be reduced; limit caffeine intake near the time of chloral hydrate dosing.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
