Camellia sinensis (green tea) leaf extract at a glance
Medicine class
Herbal antiviral treatment for topical use
Licensed use
External genital and perianal warts
Who it is for
Immunocompetent adults
Where it is applied
External affected skin only—not inside the vagina, urethra or anus
Important limitation
It does not eradicate HPV or fully prevent transmission
What is Camellia sinensis (green tea) leaf extract used for?
Licensed for skin treatment of:
External genital warts in immunocompetent adults
External perianal warts in immunocompetent adults
How does Camellia sinensis (green tea) leaf extract work?
Its precise mechanism is unknown. Laboratory evidence suggests green-tea catechins may inhibit activated skin-cell growth and have local antioxidant effects, but the clinical importance is uncertain.
How to take Camellia sinensis (green tea) leaf extract
Use on external affected skin exactly as prescribed.
Wash your hands before and after application.
Dab a thin layer onto each external wart using a finger.
Do not apply inside the vagina, urethra or anus, or to mucous membranes, open wounds, broken skin or inflamed skin.
Do not cover the area with an airtight dressing.
Wash the ointment off before sexual activity.
If using a tampon, insert it before applying the ointment.
Avoid sunlight, sunlamps and tanning beds on the treated area.
Camellia sinensis (green tea) leaf extract side effects
Common or expected effects
- Redness, itching, burning or irritation at the application site
- Local pain or swelling
- Open sores, skin hardening or blisters
- Flaking, discharge or bleeding
- Swollen groin lymph nodes
- Foreskin narrowing
Get urgent medical advice
- Severe local pain, inflammation, ulceration or infection
- Difficulty passing urine or suspected narrowing of the urethra
- Increasing difficulty retracting the foreskin
- Blisters that could indicate genital herpes
- Hypersensitivity or a severe skin reaction
Camellia sinensis (green tea) leaf extract in pregnancy
Use during pregnancy should preferably be avoided. Human data are limited and animal studies found reproductive toxicity, although absorption through the skin is expected to be low. Discuss alternatives with the prescriber or sexual-health specialist.
Camellia sinensis (green tea) leaf extract while breastfeeding
It is unknown whether the extract or its metabolites enter breast milk, so risk cannot be completely excluded. Systemic exposure after skin application is expected to be low, but the prescriber should assess its use while breastfeeding.
Camellia sinensis (green tea) leaf extract interactions
Formal interaction studies have not been performed. Important practical combinations include:
Other topical treatments on the wart area
Avoid concurrent use and wait until skin affected by previous treatment has healed.
High-dose oral green-tea extract supplements
Avoid combining them because systemic adverse effects or interactions cannot be excluded.
Immunomodulatory medicines
Safety and effectiveness have not been established, so the ointment should not be used with these treatments.
Common questions about Camellia sinensis (green tea) leaf extract
Answers are fully visible for fast scanning and source review.
Is this the same as drinking green tea?
No. The licensed product is a concentrated, standardised ointment applied to external warts; drinking green tea is not an equivalent treatment.
Does it cure HPV?
No. It treats visible external warts but does not eliminate HPV or guarantee that transmission or recurrence will not occur.
Sources
These sources were used to prepare and review this medicine page.
Prepared and reviewed by the iatroX editorial team.