Drug interactions
Clonidine + Iobenguane i
Severity: Major
Clonidine and Iobenguane i: major 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
Drugs that interfere with catecholamine uptake or stores can reduce uptake of iobenguane into target cells and lower its diagnostic or therapeutic efficacy. Clonidine is listed among agents to be withheld around iobenguane administration.
What this interaction means in plain words
Clonidine and Iobenguane i can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Reduced sympathetic neuronal uptake of iobenguane through interference with the norepinephrine transporter pathway or catecholamine stores.
What to do
Stop clonidine for at least five half-lives before iobenguane dosimetry or therapy and do not resume until at least 7 days after each dose, using an alternative antihypertensive meanwhile. Avoid abrupt clonidine withdrawal without a bridging plan because of rebound hypertension.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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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 Iobenguane i?
MediHelp rates the interaction as major. Clonidine and Iobenguane i can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Drugs that interfere with catecholamine uptake or stores can reduce uptake of iobenguane into target cells and lower its diagnostic or therapeutic efficacy. Clonidine is listed among agents to be withheld around iobenguane administration.
How serious is the interaction between Clonidine and Iobenguane i?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Stop clonidine for at least five half-lives before iobenguane dosimetry or therapy and do not resume until at least 7 days after each dose, using an alternative antihypertensive meanwhile. Avoid abrupt clonidine withdrawal without a bridging plan because of rebound hypertension.
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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