Clonidine and Triazolam interaction

Clonidine and Triazolam: 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 Clonidine (QLONILIK) label · effective 2026-08-12

Major

Avoid use with other central nervous system (CNS) depressants ( 5.3 )

Warnings and precautionsby drug classView label on DailyMed
Major

Avoid use with other central nervous system (CNS) depressants, as this combination may cause excessive drowsiness or sedation [see Drug Interactions (7) ].

Warnings and precautionsby drug classView label on DailyMed
Major

Intervention Avoid concomitant use of CNS depressants with QLONILIK.

Drug interactionsby drug classView label on DailyMed
Moderate

Intervention Monitor blood pressure and heart rate, and adjust dosage of QLONILIK accordingly in patients treated concomitantly with antihypertensives CNS depressants Clinical Implication Concomitant use of CNS depressants with clonidine potentiates the sedating effects [see Warnings and Precautions (5.3) ].

Drug interactionsby drug classView label on DailyMed
Moderate

Concomitant use of CNS depressants with clonidine potentiates the sedating effects.

Drug interactionsby drug classView label on DailyMed

From the Triazolam label · effective 2026-07-10

Major

• Effects on Driving and Operating Heavy Machinery : Patients receiving triazolam should be cautioned against driving or operating heavy machinery, as well as avoiding concomitant use with alcohol and other CNS depressant drugs.

Warnings and precautionsby drug classView label on DailyMed
Moderate

The use of alcohol and other central nervous system (CNS) depressants with sedative-hypnotics appears to increase the risk, as well as doses exceeding the maximum recommended dose.

Warnings and precautionsby drug classView label on DailyMed
Moderate

Although behaviors such as sleep-driving may occur with sedative-hypnotics alone at recommended dosages, the use of alcohol and other central nervous system (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.

Warnings and precautionsby drug classView label on DailyMed
Moderate

Some of these changes may be characterized by decreased inhibition, e.g., aggressiveness and extroversion that seem excessive, similar to that seen with alcohol and other CNS depressants (e.g., sedative/hypnotics).

Warnings and precautionsby drug classView label on DailyMed
Moderate

For the same reason, patients should be cautioned about the concomitant use of alcohol and other CNS depressant drugs during treatment with triazolam.

Warnings and 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.