Clorazepate and Estazolam interaction

Clorazepate and Estazolam: 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 Clorazepate (Clorazepate Dipotassium) label · effective 2026-07-24

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.

Warningsby drug classView label on DailyMed
Moderate

Concomitant Use with CNS Depressants Since clorazepate dipotassium has a central nervous system depressant effect, patients should be advised against the simultaneous use of other CNS depressant drugs, and cautioned that the effects of alcohol may be increased.

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Moderate

Clinical studies have shown increased sedation with concurrent hypnotic medications.

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Moderate

However, the sedative effects of high dose clorazepate interfered with the maternal care of the offspring.

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From the Estazolam label · effective 2024-02-05

Moderate

Although behaviors such as sleep-driving may occur with sedative-hypnotics alone at therapeutic doses, the use of alcohol and other CNS depressants with sedative-hypnotics appears to increase the risk of such behaviors, as does the use of sedative-hypnotics at doses exceeding the maximum recommended dose.

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Moderate

Patients should also be cautioned about possible combined effects with alcohol and other CNS depressant drugs.

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Moderate

The action of the benzodiazepines may be potentiated by anticonvulsants, antihistamines, alcohol, barbiturates, monoamine oxidase inhibitors, narcotics, phenothiazines, psychotropic medications, or other drugs that produce CNS depression.

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Minor

Estazolam, like other benzodiazepines, has CNS depressant effects.

Warningsby drug classView label on DailyMed
Minor

The following are examples of drugs known to inhibit the metabolism of other related benzodiazepines, presumably through inhibition of CYP3A: nefazodone, fluvoxamine, cimetidine, diltiazem, isoniazide, and some macrolide antibiotics.

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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.