Pharm
Cantharidin
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Cantharidin
Mechanism
Vesicant
obtained from
Blister
beetle
Indications
Stubborn periungual warts
May be useful in
Molluscum Contagiosum
in children
Obtaining
No longer available is U.S., but available in Canada
Manufactured by Omniderm
Phone: 1-888-458-0158
Fax: 1-514-458-1477
Preparations
Cantharidin (Cantharone, Canthacur)
Canthacur PS (w/
Podophyllin
5% + Salicylic Acid 30%)
Reserve for
Plantar Wart
s due to irritation
Precautions
Apply ONLY in office
Avoid touching normal skin
Application
Allow liquid to dry over wart
Then cover with occlusive tape (e.g. Blenderm)
Remove tape after 24 hours
Remove earlier for significant discomfort
In 2-3 days remove
Blister
under
Local Anesthesia
Snip off near base OR Curette
Benefits of removing
Blister
Prevents progression to ring wart
Prevents recurrence
Follow-up
Consider repeat treatment weekly as tolerated
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