Background: The broad spectrum of activity of itraconazole in vitro manifests itself clinically with the drug being effective for the treatment of onychomycosis caused by dermatophytes, Candida and some non-dermatophyte molds. The pharmacokinetics of itraconazole in the nail results in drug remaining at therapeutic levels for 6-9 months after completion of therapy. Methods: An overview of studies where continuous or pulse itraconazole therapy has been used in the treatment of fingernail and toenail onychomycosis. Results: Following continuous therapy at 200 mg/day for 3 months for toenail onychomycosis (n = 1741), the rates of clinical cure, clinical response and mycologic cure were: (meta-average ± 95% standard error (SE)), 52 ± 9%, 86 ± 2%, and 74 ± 3%, respectively, at follow-up 12 months following start of therapy. In fingernail onychomycosis (n = 211), the duration of therapy was 6 weeks and the corresponding efficacy rates at follow-up, 9 months after start of therapy, were meta-average (± S.E.) 82 ± 5%, 90 ± 2%, and 86 ± 3%, respectively. In toenail onychomycosis treated with 3 pulses of therapy (n = 1389), the clinical response, clinical cure and mycologic cure were observed in meta-average (± S.E.) 58 ± 10%, 82 ± 3%, and 77 ± 5% patients, respectively, at follow-up 12 months after the start of therapy. In fingernail onychomycosis treated with 2 pulses of therapy (n = 210), at follow-up 9 months after the start of therapy, the corresponding efficacy rates were meta-average (± S.E.) 78 ± 10%, 89 ± 6%, and 87 ± 8%, respectively. Conclusions: Both the continuous and pulse therapy regimens are safe with few adverse effects. Compared to continuous therapy, the pulse regimen has an improved adverse-effects profile, is more cost-effective, and is preferred by many patients.
CITATION STYLE
Gupta, A. K., De Doncker, P., Scher, R. K., Haneke, E., Daniel, C. R., André, J., & Baran, R. (1998). Itraconazole for the treatment of onychomycosis. International Journal of Dermatology, 37(4), 303–308. https://doi.org/10.1046/j.1365-4362.1998.00360.x
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