Chlorpheniramine and Estazolam interaction

Chlorpheniramine 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 Chlorpheniramine (Chlorphen-12) label · effective 2018-12-19

Major

…have a breathing problem such as emphysema or chronic bronchitis glaucoma trouble urinating due to an enlarged prostate gland Ask a doctor or pharmacist before use if you are taking sedatives or tranquilizers When using this product excitability may occur, especially in children drowsiness may occur avoid alcoholic beverages alchohol, sedatives and tranquilizers…

Warningsby drug classView label on DailyMed

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.

Warningsby drug classView label on DailyMed
Moderate

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

Warningsby drug classView label on DailyMed
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.

Drug interactionsby drug classView label on DailyMed
Minor

Estazolam, like other benzodiazepines, has CNS depressant effects.

Warningsby drug classView label on DailyMed
Minor

This behavior is more likely to occur when sedative-hypnotics are taken with alcohol or other central nervous system depressants (see WARNINGS ).

Precautionsby 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.