Chlordiazepoxide and Olanzapine and fluoxetine interaction

Chlordiazepoxide and Olanzapine and fluoxetine: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.

Major

Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.

What the FDA labels say

From the Chlordiazepoxide (CHLORDIAZEPOXIDE HYDROCHLORIDE) label · effective 2023-02-07

Major

Prescribe the lowest effective dosage; avoid or minimize concomitant use of CNS depressants and other substances associated with abuse, misuse, and addiction (e.g., opioid analgesics, stimulants); and advise patients on the proper disposal of unused drug.

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Moderate

The concomitant use of alcohol or other central nervous system depressants may have an additive effect.

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From the Olanzapine and fluoxetine label · effective 2026-03-31

Moderate

Benzodiazepines : May potentiate orthostatic hypotension and sedation ( 7.6 , 7.7 )

Drug interactionsby drug classView label on DailyMed
Moderate

Potential for Other Drugs to Affect Olanzapine and Fluoxetine Capsules Benzodiazepines — Co-administration of diazepam with olanzapine potentiated the orthostatic hypotension observed with olanzapine [see Drug Interactions ( 7.7 )] .

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Moderate

Benzodiazepines — Multiple doses of olanzapine did not influence the pharmacokinetics of diazepam and its active metabolite N-desmethyldiazepam.

Drug interactionsby drug classView label on DailyMed

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Not medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.