Drug interactions
Caffeine + Quetiapine
Severity: Minor
Caffeine and Quetiapine: 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 stimulant that may partly offset quetiapine's sedation, but the combination has no established clinical significance. High caffeine intake may worsen anxiety or insomnia in patients with psychiatric illness.
What this interaction means in plain words
Caffeine and Quetiapine 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; Quetiapine belongs to Central Nervous System.
Why it happens
Pharmacodynamic opposition: adenosine receptor antagonism by caffeine versus sedative receptor blockade by quetiapine.
What to do
No action beyond advising moderation of caffeine intake in patients with anxiety or sleep disturbance.
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 Quetiapine
- Adagrasib + Quetiapine Major
- Amiodarone + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine 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 Quetiapine?
MediHelp rates the interaction as minor. Caffeine and Quetiapine 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 stimulant that may partly offset quetiapine's sedation, but the combination has no established clinical significance. High caffeine intake may worsen anxiety or insomnia in patients with psychiatric illness.
How serious is the interaction between Caffeine and Quetiapine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No action beyond advising moderation of caffeine intake in patients with anxiety or sleep disturbance.
What other medicines interact with Quetiapine?
MediHelp also lists interactions of Quetiapine with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Quetiapine page.
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