Drug interactions
Clonidine + Protriptyline
Severity: Moderate
Clonidine and Protriptyline: 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
Protriptyline may diminish the blood pressure lowering effect of clonidine, resulting in poor control or hypertensive episodes. Tricyclic antidepressants are the best documented class for this interaction.
What this interaction means in plain words
Clonidine and Protriptyline 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
Blockade of neuronal catecholamine reuptake and alpha-2 antagonism oppose clonidine's central action.
What to do
Monitor blood pressure when starting, changing or stopping protriptyline and choose another antihypertensive if control is lost. Avoid abrupt clonidine discontinuation.
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 Protriptyline?
MediHelp rates the interaction as moderate. Clonidine and Protriptyline 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. Protriptyline may diminish the blood pressure lowering effect of clonidine, resulting in poor control or hypertensive episodes. Tricyclic antidepressants are the best documented class for this interaction.
How serious is the interaction between Clonidine and Protriptyline?
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 when starting, changing or stopping protriptyline and choose another antihypertensive if control is lost. Avoid abrupt clonidine discontinuation.
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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