Nuvail is a nail solution that used for treating symptoms that are associated with nail dystrophy. For example, nail fragility, discoloration and nail splitting in both the intact and damaged nails. Nuvail works by coating and adhering to the surface of the nail thereby preventing direct friction and abrasion on the nails. It also protects the nails from the effects of moisture. This medication will continue working even after application. It protects the nail from effects of environmental factors.