Drug interactions
Inotuzumab + Lithium
Severity: Moderate
Inotuzumab and Lithium: 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
Inotuzumab ozogamicin is associated with QT prolongation, and lithium may add to this effect. The combined risk is higher with electrolyte abnormalities or other contributing drugs.
What this interaction means in plain words
Inotuzumab and Lithium 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
Additive pharmacodynamic QT prolongation.
What to do
Obtain an ECG and electrolytes at baseline and monitor them during treatment. Interrupt therapy if the QTc becomes markedly prolonged.
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 Lithium
- Lithium + Thioridazine Contraindicated
- Lithium + Vandetanib Contraindicated
- Aceclofenac + Lithium Major
- Acemetacin + Lithium Major
- Amisulpride + Lithium Major
- Amlodipine-benazepril + Lithium Major
Frequently asked questions
Can I take Inotuzumab with Lithium?
MediHelp rates the interaction as moderate. Inotuzumab and Lithium 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. Inotuzumab ozogamicin is associated with QT prolongation, and lithium may add to this effect. The combined risk is higher with electrolyte abnormalities or other contributing drugs.
How serious is the interaction between Inotuzumab and Lithium?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain an ECG and electrolytes at baseline and monitor them during treatment. Interrupt therapy if the QTc becomes markedly prolonged.
What other medicines interact with Lithium?
MediHelp also lists interactions of Lithium with, for example, Thioridazine, Vandetanib, Aceclofenac. The full list is on the Lithium page.
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