Terbinafine hydrochloride tablets are still effective in the treatment of gray nails. When it comes to treatment, the treatment cycle is different for finger nails and toe nails. The treatment cycle for finger nails is usually around 3 months, while the cycle for toe nails is around six months, and for bunions the treatment cycle may be a little longer. The usage and dosage of eating is mainly oral terbinafine hydrochloride tablets, 2 tablets once a day. Topical terbinafine hydrochloride gel is also very effective, as well as terbinafine hydrochloride spray treatment is also very effective, both 2 times a day. Also during the treatment of gray nails you need to avoid sharing common slippers and shoes with others to avoid cross infection.