- Have a history of disallowed therapies including oral (by mouth) antifungal treatments within the previous 6 weeks, recent use (within 2 weeks of the study start) of topical antifungal agent, immunosuppressive or radiation therapy within the previous 4 weeks, recent use (within 2 weeks prior to screening) of other oral antibiotics, systemic corticosteroids or topical corticosteroids or antibiotics applied to the feet