Intermittent versus continuous terbinafine in the treatment of toenail onychomycosis: a randomized, double-blind comparison.

J Dermatolog Treat 2006 ;17(1):38-44

Department of Dermatology, University of Iceland, Reykjavik, Iceland.

Background: Terbinafine is an established drug for the treatment of toenail onychomycosis. Minimizing the total dose of terbinafine and giving it intermittently could improve tolerability as well as compliance, provided efficacy is not compromised.

Objective: Two identical trials were conducted to compare the efficacy, safety and tolerability of the current standard regimen of terbinafine 250 mg daily with a new formulation of terbinafine given intermittently for three cycles of 2 weeks of treatment (350 mg daily) followed by 2 weeks off treatment.

Methods: A total of 2005 patients with a clinical diagnosis of subungual onychomycosis of the large toenail confirmed by microscopy and culture for a dermatophyte were recruited into the two trials and treated for 12 weeks.

Results: Patients with onychomycosis of prolonged duration (mean 9 years) and a median nail involvement of 63% with or without spikes, lateral involvement and white superficial onychomycosis (WSO) were included in the trial. The studies found a significant difference (p<0.05) in favour of standard daily dosing with terbinafine. Response rates for the primary variable complete cure (mycological and clinical cure) were lower with the new formulation in both Trial I (-5.8%; 95% CI -11.8, 0.07) and Trial II (difference -5.9%; 95% CI -12, 0.1). Both treatments were equally well tolerated, with approximately 11% of patients in both groups reporting at least one treatment-related adverse event.

Conclusions: Pulsed dosing with terbinafine did not provide any clear safety advantages and was significantly less effective. Consequently, continuous treatment with terbinafine tablets remains the optimal therapy for onychomycosis.

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http://dx.doi.org/10.1080/09546630500504713DOI Listing
April 2006
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References

(Supplied by CrossRef)

Gupta A. K. et al.
J Am Acad Dermatol 2000

Elewski B. E. et al.
Arch Intern Med 2002

Jarv H. et al.
Mycoses 2004

Gupta A. K. et al.
J Cutan Med Surg 2004

Lagana F. J et al.
Clin Podiatr Med Surg 2004

Roujeau J. C. et al.
Dermatology 2004

Joseph W. S et al.
Clin Podiatr Med Surg 2004

Darkes M. J. et al.
Am J Clin Dermatol 2003

De Cuyper C. et al.
Br J Dermatol 1999

Gupta A. K. et al.
Br J Dermatol 2004

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