CNL8

Generic name:ciclopirox
Dosage form: nail lacquer
Drug class:Topical antifungals

Medically reviewed by Drugs.com. Last updated on Nov 22, 2021.

CNL8 Description

CNL8 (ciclopirox topical solution, 8%) nail lacquer.

For use on fingernails and toenails and immediately adjacent skin only.

Not for use in eyes.

CNL8 (ciclopirox topical solution, 8%) nail lacquer contains a synthetic antifungal agent, ciclopirox. It is intended for topical use on fingernails and toenails and immediately adjacent skin.

Each gram of CNL8 (ciclopirox topical solution, 8%) nail lacquer contains 80 mg ciclopirox in a solution base consisting of ethyl acetate, NF; isopropyl alcohol, USP; and butyl monoester of poly[methylvinyl ether/maleic acid] in isopropyl alcohol. Ethyl acetate and isopropyl alcohol are solvents that vaporize after application.

CNL8 (ciclopirox topical solution, 8%) nail lacquer is a clear, colorless to slightly yellowish solution.

The chemical name for ciclopirox is 6-cyclohexyl-1-hydroxy-4-methyl-2(1H)-pyridone, with the molecular formula C12H17NO2 and a molecular weight of 207.27. The CAS Registry Number is 29342-05-0. The chemical structure is:

CNL8 - Clinical Pharmacology

Microbiology Mechanism of Action: The mechanism of action of ciclopirox has been investigated using various in vitro and in vivo infection models. One in vitro study suggested that ciclopirox acts by chelation of polyvalent cations (Fe+3 or Al+3) resulting in the inhibition of the metal-dependent enzymes that are responsible for the degradation of peroxides within the fungal cell. The clinical significance of this observation is not known.

Activity in vitro and ex vivo: In vitro methodologies employing various broth or solid media with and without additional nutrients have been utilized to determine ciclopirox minimum inhibitory concentration (MIC) values for the dermatophytic molds.(1-2) As a consequence, a broad range of MIC values, 1-20 mcg/mL were obtained for Trichophyton rubrum and Trichophyton mentagrophytes species. Correlation between in vitro MIC results and clinical outcome has yet to be established for ciclopirox.

One ex vivo study was conducted evaluatin..