Actikerall™ (5-Fluorouracil 0.5% and Salicylic Acid 10%) Topical Solution for Patient-directed Treatment of Actinic Keratoses

Harrison P. Nguyen, BA; Jason K. Rivers, MD, FRCPC, FAAD


Skin Therapy Letter. 2016;21(3) 

In This Article

Adverse Effects

In the first trial mentioned above,[14] 7.4% (35/470) of patients withdrew from the study prematurely: 14 patients from the 5-FU-SA group, 16 patients from the diclofenac group, and 5 patients from the vehicle group. About 95% of patients in the study medication group reported treatment-emergent adverse effects (TEAEs), with local inflammation and pruritus at the application site being the most common. Approximately 60% of patients in the vehicle group also reported application site burning, suggesting the etiology of this sensation was likely related to dimethyl sulfoxide, which facilitates tissue absorption and is a known irritant present in the 5-FU-SA excipients. For patients who have difficulty tolerating the side effects, dosing can be reduced from daily application to treatment 3 times a week. In spite of the relatively high rate of TEAEs, patients have reported a high level of satisfaction with the use of low-dose 5-FU-SA.[16] No serious adverse effects directly related to 5-FU-SA treatment, including usage as Verrumal® for warts, have been reported in either clinical studies or post-marketing surveillance.