Drug interactions
Porfimer + Thioridazine
Severity: Moderate
Porfimer 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
Phenothiazines such as thioridazine can cause photosensitivity, and porfimer is a photosensitizer used in photodynamic therapy. Combined use may intensify skin photosensitivity reactions.
What this interaction means in plain words
Porfimer 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.
Porfimer belongs to Miscellaneous; Thioridazine belongs to Central Nervous System.
Why it happens
Additive photosensitizing effects.
What to do
Reinforce strict protection from sunlight and bright indoor light after porfimer administration. Consider whether thioridazine can be changed during the photosensitivity period.
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 Thioridazine
- Abiraterone + Thioridazine Contraindicated
- Adagrasib + Thioridazine Contraindicated
- Amiodarone + Thioridazine Contraindicated
- Amisulpride + Thioridazine Contraindicated
- Amitriptyline + Thioridazine Contraindicated
- Amoxapine + Thioridazine Contraindicated
Other interactions of Porfimer
Frequently asked questions
Can I take Porfimer with Thioridazine?
MediHelp rates the interaction as moderate. Porfimer 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. Phenothiazines such as thioridazine can cause photosensitivity, and porfimer is a photosensitizer used in photodynamic therapy. Combined use may intensify skin photosensitivity reactions.
How serious is the interaction between Porfimer 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: Reinforce strict protection from sunlight and bright indoor light after porfimer administration. Consider whether thioridazine can be changed during the photosensitivity period.
What other medicines interact with Thioridazine?
MediHelp also lists interactions of Thioridazine with, for example, Abiraterone, Adagrasib, Amiodarone. The full list is on the Thioridazine page.
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