A skin treatment applied to genital warts
Podophyllotoxin
A liquid or cream applied to external genital warts to break them down over repeated courses.
What is Podophyllotoxin?
Podophyllotoxin is a plant-derived topical medicine, available as a liquid or cream, used to treat external genital warts. It works by attacking the wart tissue so the warts shrink and clear, usually over several short treatment cycles. It is applied carefully only to the warts themselves, keeping it off healthy skin, because it commonly causes local redness, soreness, burning and erosion. It is not suitable in pregnancy. It treats the visible warts but does not cure the underlying virus, so warts can come back.
Education and reference only. This is a plain-language guide to Podophyllotoxin — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Podophyllotoxin is a topical medicine made from a plant extract, used to treat external genital and perianal warts, which are caused by a common virus. It comes as a liquid (solution) or a cream that is dabbed onto the warts at home. It is applied in short repeated cycles of treatment with breaks in between, rather than continuously. It treats the warts you can see but does not get rid of the virus itself, so it is used as one of several options for genital warts, often started or advised by a sexual health or skin service.
How it works
Podophyllotoxin stops the cells in the wart from dividing and growing, which causes the wart tissue to break down and gradually fall away. Because warts are clusters of overgrown skin cells driven by a virus, attacking these cells shrinks and clears the visible warts. It works only where it is applied, which is why it is dabbed precisely onto the warts and kept off healthy skin. It does not clear the virus from the skin, so even after the warts go they can return, and repeated cycles of treatment are often needed.
Company & origin
Originated / developed by: Generic and branded manufacturers.
A plant-derived topical medicine used in the UK to treat external genital warts.
Practical use
How to take Podophyllotoxin
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- Apply it only to the warts themselves, using the applicator or as shown, and keep it off the surrounding healthy skin.
- Follow the cycle you are given, applying it for a few days and then taking a break, rather than using it continuously.
- Let it dry before covering the area, and wash your hands well after applying it.
- Expect some local redness or soreness on the warts, but stop and seek advice if irritation becomes severe.
- Do not use it in pregnancy, and use reliable contraception while treating, as advised by your clinic.
Weighing it up
Advantages & disadvantages of Podophyllotoxin
Advantages
- An effective treatment that can be applied at home to clear external genital warts.
- Targets the wart tissue directly without needing a clinic procedure for each application.
- Comes as a liquid or cream, allowing a choice that suits the area being treated.
Disadvantages
- Commonly causes local redness, soreness, burning or skin erosion at the treated area.
- Must be kept off healthy skin and applied precisely, which takes care.
- Treats the visible warts but not the underlying virus, so warts can come back.
Practical use
Good to know
The most important thing with podophyllotoxin is careful, precise application: it should be dabbed only onto the warts themselves and kept off the surrounding healthy skin, because it can cause redness, soreness, burning, itching and even small areas of skin erosion. Some local reaction at the wart is expected as it works, but spreading it onto normal skin causes unnecessary irritation. It is used in short cycles, applying it for a few days and then having a break, rather than using it continuously, and your clinic will explain exactly how. It must not be used in pregnancy, and reliable contraception is sensible while using it. It treats the visible warts but not the underlying virus, so warts can come back and further courses or other treatments may be needed.
Who should not take it / use with caution
- It must not be used in pregnancy because of the risk of harm to a developing baby.
- People who have had a serious allergic reaction to podophyllotoxin should not use it.
- It is not for use on broken, bleeding or inflamed skin, or on warts inside the vagina, anus or other internal areas, without specialist advice.
Monitoring
- Reviewing how the warts respond and whether further cycles are needed.
- Checking the treated skin for excessive irritation or erosion.
- Considering other treatments if warts persist or keep coming back.
Side effects
- Redness, soreness, burning or itching at the treated area, which is common as it works.
- Small areas of skin erosion or breakdown where it has been applied.
- Irritation of nearby healthy skin if the medicine spreads onto it.
- Rarely, more severe local reactions, which should prompt you to stop and seek advice.
Key interactions
- There are few important interactions with medicines taken by mouth, as it works on the skin.
- Avoid using other irritating skin products on the same area at the same time unless advised.
- Tell your clinic about other treatments you are using for warts to avoid over-treating the skin.
Available as: A liquid (solution) and a cream applied to the skin.
Answers
Podophyllotoxin: frequently asked questions
What is podophyllotoxin used for?
It is used to treat external genital and perianal warts by breaking down the wart tissue so the warts shrink and clear.
Why must I keep it off healthy skin?
It can irritate and erode skin, so applying it only to the warts and keeping it off surrounding healthy skin avoids unnecessary soreness and damage.
Will it cure the virus?
No. It clears the visible warts but does not remove the underlying virus, so warts can come back and further treatment may be needed.
Can I use it if I am pregnant?
No. Podophyllotoxin must not be used in pregnancy because of the risk to a developing baby; tell your clinic if you are or might be pregnant.
Is some soreness normal?
Yes, some redness or soreness on the warts is expected as it works, but you should stop and seek advice if the irritation becomes severe.
Authoritative sources
- BNF
- NICE CKS
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