Drug interactions
Lithium + Pitolisant
Severity: Moderate
Lithium and Pitolisant: 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
Pitolisant may prolong the QT interval, and lithium can add to this effect. The risk is higher in patients with cardiac disease or electrolyte disturbances.
What this interaction means in plain words
Lithium and Pitolisant 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.
Lithium belongs to Central Nervous System; Pitolisant belongs to Central Nervous System.
Why it happens
Additive QTc prolongation.
What to do
Obtain an ECG before starting and monitor it in patients with risk factors. Correct electrolyte abnormalities and reassess if QTc lengthens.
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
Other interactions of Pitolisant
- Alfuzosin + Pitolisant Major
- Amiodarone + Pitolisant Major
- Amisulpride + Pitolisant Major
- Anagrelide + Pitolisant Major
- Asenapine + Pitolisant Major
- Bupropion + Pitolisant Major
Frequently asked questions
Can I take Lithium with Pitolisant?
MediHelp rates the interaction as moderate. Lithium and Pitolisant 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. Pitolisant may prolong the QT interval, and lithium can add to this effect. The risk is higher in patients with cardiac disease or electrolyte disturbances.
How serious is the interaction between Lithium and Pitolisant?
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 before starting and monitor it in patients with risk factors. Correct electrolyte abnormalities and reassess if QTc lengthens.
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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