Drug interactions
Asenapine transdermal + Lithium
Severity: Moderate
Asenapine transdermal 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
Asenapine can prolong the QT interval, and lithium may add to cardiac conduction effects. Both are used in bipolar disorder, and the combination is common in practice. Risk is higher with other QT risk factors.
What this interaction means in plain words
Asenapine transdermal 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 effects on cardiac repolarization causing QT prolongation.
What to do
Use with a baseline ECG and electrolyte check where risk factors exist. Monitor lithium levels and ECG, and avoid adding other QT-prolonging agents.
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 Asenapine transdermal with Lithium?
MediHelp rates the interaction as moderate. Asenapine transdermal 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. Asenapine can prolong the QT interval, and lithium may add to cardiac conduction effects. Both are used in bipolar disorder, and the combination is common in practice. Risk is higher with other QT risk factors.
How serious is the interaction between Asenapine transdermal 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: Use with a baseline ECG and electrolyte check where risk factors exist. Monitor lithium levels and ECG, and avoid adding other QT-prolonging agents.
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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