Drug interactions
Carisoprodol + Thioridazine
Severity: Moderate
Carisoprodol and Thioridazine: 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
Both drugs cause sedation, and combined use can increase drowsiness, dizziness and psychomotor impairment. Thioridazine also carries a significant QT-prolonging risk, which is not altered by carisoprodol, but oversedation can complicate monitoring. The main concern with this pair is additive CNS depression.
What this interaction means in plain words
Carisoprodol and Thioridazine 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.
Carisoprodol belongs to Musculoskeletal; Thioridazine belongs to Central Nervous System.
Why it happens
Additive CNS depression, with thioridazine's antihistaminic and anticholinergic effects adding to sedation.
What to do
Use the lowest effective doses and monitor for excessive sedation and falls. Reduce or stop carisoprodol if impairment of alertness develops.
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 Carisoprodol
Other interactions of Thioridazine
- Abiraterone + Thioridazine Contraindicated
- Adagrasib + Thioridazine Contraindicated
- Amiodarone + Thioridazine Contraindicated
- Amisulpride + Thioridazine Contraindicated
- Amitriptyline + Thioridazine Contraindicated
- Amoxapine + Thioridazine Contraindicated
Frequently asked questions
Can I take Carisoprodol with Thioridazine?
MediHelp rates the interaction as moderate. Carisoprodol and Thioridazine 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. Both drugs cause sedation, and combined use can increase drowsiness, dizziness and psychomotor impairment. Thioridazine also carries a significant QT-prolonging risk, which is not altered by carisoprodol, but oversedation can complicate monitoring. The main concern with this pair is additive CNS depression.
How serious is the interaction between Carisoprodol and Thioridazine?
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 the lowest effective doses and monitor for excessive sedation and falls. Reduce or stop carisoprodol if impairment of alertness develops.
What other medicines interact with Carisoprodol?
MediHelp also lists interactions of Carisoprodol with, for example, Alfentanil, Alprazolam, Amobarbital. The full list is on the Carisoprodol page.
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