Gray nail is refers to the fingernails, toenails appear nail thickening, gray and yellow, as well as defects. Gray nail treatment, the most common can be oral itraconazole capsule, itraconazole capsule treatment of gray nail effect is better, the course of treatment is 3-4 months. Itraconazole capsule oral is once 2 capsules, 2 times a day, take immediately after meals, eat 1 week stop 3 weeks. After itraconazole regular treatment, finger nails are treated for 3 months, toenails are treated for 4 months, 95% of people are able to return to normal, into normal nails. Therefore, itraconazole capsule treatment of gray nails is more effective, at present itraconazole is also the best drug for the treatment of gray nails.