Drug interactions
Benzoyl peroxide + Porfimer
Severity: Minor
Benzoyl peroxide and Porfimer: minor 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
Porfimer is a photosensitizer used in photodynamic therapy, and benzoyl peroxide can itself make skin more sensitive to light. Topical use of benzoyl peroxide on treated or exposed skin could add to the photosensitivity, although systemic exposure from benzoyl peroxide is small.
What this interaction means in plain words
Benzoyl peroxide and Porfimer have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Benzoyl peroxide belongs to Dermatology; Porfimer belongs to Miscellaneous.
Why it happens
Possible additive photosensitization, with only limited systemic absorption of topical benzoyl peroxide.
What to do
Avoid applying benzoyl peroxide to areas that will be exposed to light treatment, and reinforce strict sun and bright-light protection after porfimer dosing. Follow the porfimer photoprotection period.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Benzoyl peroxide
Other interactions of Porfimer
Frequently asked questions
Can I take Benzoyl peroxide with Porfimer?
MediHelp rates the interaction as minor. Benzoyl peroxide and Porfimer have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Porfimer is a photosensitizer used in photodynamic therapy, and benzoyl peroxide can itself make skin more sensitive to light. Topical use of benzoyl peroxide on treated or exposed skin could add to the photosensitivity, although systemic exposure from benzoyl peroxide is small.
How serious is the interaction between Benzoyl peroxide and Porfimer?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid applying benzoyl peroxide to areas that will be exposed to light treatment, and reinforce strict sun and bright-light protection after porfimer dosing. Follow the porfimer photoprotection period.
What other medicines interact with Benzoyl peroxide?
MediHelp also lists interactions of Benzoyl peroxide with, for example, Methoxsalen, Dapsone, Verteporfin. The full list is on the Benzoyl peroxide page.
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