Drug interactions
Clonidine + Trifluoperazine
Severity: Moderate
Clonidine and Trifluoperazine: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Trifluoperazine can cause orthostatic hypotension and sedation, which may be additive with clonidine. Patients may experience dizziness, falls and confusion, particularly when older.
What this interaction means in plain words
Clonidine and Trifluoperazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Additive hypotensive and sedative effects from phenothiazine alpha-1 blockade and central alpha-2 agonism.
What to do
Monitor blood pressure including standing measurements, and watch for sedation or confusion. Titrate doses slowly and lower either drug if symptomatic hypotension develops.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Clonidine
- Acebutolol + Clonidine Major
- Amifostine + Clonidine Major
- Amiodarone + Clonidine Major
- Amoxapine + Clonidine Major
- Atenolol-chlorthalidone + Clonidine Major
- Atenolol + Clonidine Major
Frequently asked questions
Can I take Clonidine with Trifluoperazine?
MediHelp rates the interaction as moderate. Clonidine and Trifluoperazine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Trifluoperazine can cause orthostatic hypotension and sedation, which may be additive with clonidine. Patients may experience dizziness, falls and confusion, particularly when older.
How serious is the interaction between Clonidine and Trifluoperazine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor blood pressure including standing measurements, and watch for sedation or confusion. Titrate doses slowly and lower either drug if symptomatic hypotension develops.
What other medicines interact with Clonidine?
MediHelp also lists interactions of Clonidine with, for example, Acebutolol, Amifostine, Amiodarone. The full list is on the Clonidine page.
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