You might give the amino acid L-lysine a try.
It worked for my dad within a week after 2 months of different meds did not. He now takes it whenever the shingles reappear, and it goes away.

It is also recomended that nuts, chocolate and sunflower seeds be avoided.

L-lysine and shingles:
http://www.livestrong.com/article/27...-and-shingles/

With love, Erika