Drug interactions
Histrelin + Ofloxacin
Severity: Moderate
Histrelin and Ofloxacin: 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
Androgen deprivation therapy, including GnRH agonists such as histrelin, can prolong the QT interval. Combined with ofloxacin, this may increase the risk of torsades de pointes.
What this interaction means in plain words
Histrelin and Ofloxacin 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.
Histrelin belongs to Musculoskeletal; Ofloxacin belongs to Anti Bacterial.
Why it happens
Additive QT prolongation; GnRH agonist-induced androgen suppression affects cardiac repolarization.
What to do
Consider baseline and periodic ECG monitoring and correct electrolyte abnormalities. Choose a non-QT-prolonging antibiotic when possible in patients with cardiac risk factors.
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 Ofloxacin
- Ofloxacin + Thioridazine Contraindicated
- Adagrasib + Ofloxacin Major
- Amiodarone + Ofloxacin Major
- Amisulpride + Ofloxacin Major
- Anagrelide + Ofloxacin Major
- Arsenic trioxide + Ofloxacin Major
Other interactions of Histrelin
- Amiodarone + Histrelin Major
- Anagrelide + Histrelin Major
- Histrelin + Thioridazine Major
- Alfuzosin + Histrelin Moderate
- Amisulpride + Histrelin Moderate
- Asenapine + Histrelin Moderate
Frequently asked questions
Can I take Histrelin with Ofloxacin?
MediHelp rates the interaction as moderate. Histrelin and Ofloxacin 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. Androgen deprivation therapy, including GnRH agonists such as histrelin, can prolong the QT interval. Combined with ofloxacin, this may increase the risk of torsades de pointes.
How serious is the interaction between Histrelin and Ofloxacin?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Consider baseline and periodic ECG monitoring and correct electrolyte abnormalities. Choose a non-QT-prolonging antibiotic when possible in patients with cardiac risk factors.
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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