Drug interactions
Ofloxacin + Selpercatinib
Severity: Major
Ofloxacin and Selpercatinib: 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
Both drugs can prolong the QT interval, so combined use may increase the risk of serious ventricular arrhythmia including torsades de pointes. Risk is higher with electrolyte abnormalities or heart disease.
What this interaction means in plain words
Ofloxacin and Selpercatinib 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.
Ofloxacin belongs to Anti Bacterial; Selpercatinib belongs to Oncology.
Why it happens
Additive prolongation of cardiac repolarization.
What to do
Avoid the combination if possible by choosing a non-QT-prolonging antibiotic. If used, monitor ECG and electrolytes and correct abnormalities.
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 Ofloxacin
- Ofloxacin + Thioridazine Contraindicated
- Adagrasib + Ofloxacin Major
- Amiodarone + Ofloxacin Major
- Amisulpride + Ofloxacin Major
- Anagrelide + Ofloxacin Major
- Arsenic trioxide + Ofloxacin Major
Other interactions of Selpercatinib
Frequently asked questions
Can I take Ofloxacin with Selpercatinib?
MediHelp rates the interaction as major. Ofloxacin and Selpercatinib 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 drugs can prolong the QT interval, so combined use may increase the risk of serious ventricular arrhythmia including torsades de pointes. Risk is higher with electrolyte abnormalities or heart disease.
How serious is the interaction between Ofloxacin and Selpercatinib?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination if possible by choosing a non-QT-prolonging antibiotic. If used, monitor ECG and electrolytes and correct abnormalities.
What other medicines interact with Ofloxacin?
MediHelp also lists interactions of Ofloxacin with, for example, Thioridazine, Adagrasib, Amiodarone. The full list is on the Ofloxacin page.
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