Ycanth Side Effects

Generic name: cantharidin topical

Medically reviewed by Drugs.com. Last updated on Aug 12, 2023.

Note: This document contains side effect information about cantharidin topical. Some dosage forms listed on this page may not apply to the brand name Ycanth.

Applies to cantharidin topical: topical application solution.

Serious side effects of Ycanth

Along with its needed effects, cantharidin topical (the active ingredient contained in Ycanth) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking cantharidin topical:

More common

Changes in color of the skin
flushing, redness of the skin
skin ulcers
swelling of the skin
unusually warm skin

Incidence not known

Blurred vision or blue-green halos seen around objects
dry eyes
sensitivity of the eyes to light

For Healthcare Professionals

Applies to cantharidin topical: topical liquid.

General

Adverse reactions were primarily local skin reactions at the application site which was reported in 97% of patients and discontinuation due to adverse reactions was reported in 2.3% of patients.^[Ref]

Dermatologic

Common (1% to 10%): Moderate contact dermatitis^[Ref]

Local

Very common (10% or more): Mild application site dryness (19%), mild application site discoloration (28%), mild application site erythema (24%), mild application site scab (39%), mild application site pruritus (47%), mild application site pain (41%), mild application site vesicles (60%)

Common (1% to 10%): Mild application site erosion, mild application site edema^[Ref]