Terbinafine
onychomycosis, toenail
"I have just finished my first month of a three month prescription and so far I've only noticed that my toe nails have almost stopped hurting. 
It appears that my toenails are going to fall off. Is this normal? Are they supposed to fall off then I get new ones? Also, the only side affect I get is slight headaches .... no other symptoms. I'm crossing my fingers this works!! Doc said it may take another three month treatment after this one."