Daridorexant and Diazepam interaction

Daridorexant and Diazepam: 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 Diazepam (Valium) label · effective 2026-08-11

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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Major

Alcohol Concomitant use with alcohol is not recommended due to enhancement of the sedative effect.

Drug interactionsby drug classView label on DailyMed
Moderate

…be given to the pharmacology of the agents employed particularly with compounds that may potentiate or be potentiated by the action of Valium, such as phenothiazines, antipsychotics, anxiolytics/sedatives, hypnotics, anticonvulsants, narcotic analgesics, anesthetics, sedative antihistamines, narcotics, barbiturates, MAO inhibitors and other antidepressants.

Drug interactionsby drug classView label on DailyMed
Minor

Since Valium has a central nervous system depressant effect, patients should be advised against the simultaneous ingestion of alcohol and other CNS- depressant drugs during Valium therapy.

Warningsby drug classView label on DailyMed
Minor

Patients should be advised against the simultaneous ingestion of alcohol and other CNS-depressant drugs during Valium therapy.

Precautionsby drug classView label on DailyMed

From the Daridorexant (QUVIVIQ) label · effective 2026-02-26

Moderate

CNS-Depressant Effects and Daytime Impairment: Impairs alertness and motor coordination including morning impairment.

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Moderate

Risk increases when used with other central nervous system (CNS) depressants.

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Moderate

Co-administration with other CNS depressants (e.g., benzodiazepines, opioids, tricyclic antidepressants, alcohol) increases the risk of CNS depression, which can cause daytime impairment.

Warnings and precautionsby drug classView label on DailyMed
Moderate

Dosage adjustments of QUVIVIQ and of concomitant CNS depressants may be necessary when administered together because of potentially additive effects.

Warnings and precautionsby drug classView label on DailyMed
Moderate

Alcohol and Other CNS Depressants Clinical Implications: Concomitant use of alcohol or other CNS depressants with QUVIVIQ may lead to additive impairment of psychomotor performance and risk of CNS depression [see Clinical Pharmacology (12.2) ] .

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.