Drug interactions
Degarelix + Lofexidine
Severity: Major
Degarelix and Lofexidine: major interaction.
Last updated Sources: UK SmPC
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
Both agents can prolong the QT interval, and lofexidine also slows the heart rate. The combination may increase the risk of torsades de pointes.
What this interaction means in plain words
Degarelix and Lofexidine 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.
Degarelix belongs to Endocrine; Lofexidine belongs to Central Nervous System.
Why it happens
Additive QT prolongation, compounded by lofexidine-related bradycardia.
What to do
Obtain a baseline ECG and correct electrolyte abnormalities. Monitor QTc and heart rate during co-therapy.
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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References
- Degarelix Ferring 80 mg Powder and solvent for solution for injection - SmPC sections 4.3/4.5 (class statement: medicinal products known to prolong the QTc interval; "the concomitant use of degarelix with medicinal products known to prolong the QTc interval or medicinal products able to induce tor… — electronic medicines compendium (UK SmPC)
Other interactions of Lofexidine
- Adagrasib + Lofexidine Major
- Alfuzosin + Lofexidine Major
- Amiodarone + Lofexidine Major
- Amisulpride + Lofexidine Major
- Anagrelide + Lofexidine Major
- Apomorphine + Lofexidine Major
Other interactions of Degarelix
- Degarelix + Pimozide Contraindicated
- Degarelix + Thioridazine Contraindicated
- Amiodarone + Degarelix Major
- Amisulpride + Degarelix Major
- Anagrelide + Degarelix Major
- Cisapride + Degarelix Major
Frequently asked questions
Can I take Degarelix with Lofexidine?
MediHelp rates the interaction as major. Degarelix and Lofexidine 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. Both agents can prolong the QT interval, and lofexidine also slows the heart rate. The combination may increase the risk of torsades de pointes.
How serious is the interaction between Degarelix and Lofexidine?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and correct electrolyte abnormalities. Monitor QTc and heart rate during co-therapy.
What other medicines interact with Lofexidine?
MediHelp also lists interactions of Lofexidine with, for example, Adagrasib, Alfuzosin, Amiodarone. The full list is on the Lofexidine page.
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