Drug interactions
Lofexidine + Thiothixene
Severity: Moderate
Lofexidine and Thiothixene: 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
Thiothixene is a sedating antipsychotic, and lofexidine also causes sedation and lowers blood pressure. Together they can increase drowsiness and orthostatic hypotension, and both may also affect the QT interval.
What this interaction means in plain words
Lofexidine and Thiothixene 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 CNS depression and hypotensive effects, with possible additive QT prolongation.
What to do
Monitor sedation, orthostatic blood pressure and heart rate, and consider an ECG if other QT risk factors are present. Adjust the dose of either drug if sedation or hypotension occurs.
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 Lofexidine
- Adagrasib + Lofexidine Major
- Alfuzosin + Lofexidine Major
- Amiodarone + Lofexidine Major
- Amisulpride + Lofexidine Major
- Anagrelide + Lofexidine Major
- Apomorphine + Lofexidine Major
Frequently asked questions
Can I take Lofexidine with Thiothixene?
MediHelp rates the interaction as moderate. Lofexidine and Thiothixene 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. Thiothixene is a sedating antipsychotic, and lofexidine also causes sedation and lowers blood pressure. Together they can increase drowsiness and orthostatic hypotension, and both may also affect the QT interval.
How serious is the interaction between Lofexidine and Thiothixene?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor sedation, orthostatic blood pressure and heart rate, and consider an ECG if other QT risk factors are present. Adjust the dose of either drug if sedation or hypotension occurs.
What other medicines interact with Lofexidine?
MediHelp also lists interactions of Lofexidine with, for example, Adagrasib, Alfuzosin, Amiodarone. The full list is on the Lofexidine page.
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