Years ago, both my parents had a battle with that painful virus. Of course, it had to be long before any antiviral meds were available.
On the folk remedies page of earthclinic, many comment about the soothing benefits of ACV; also mentioned are l-lysine, cayenne pepper and Aloe Vera Gel, Coconut Oi, Corn Starch & Chiropractic, etc. http://www.earthclinic.com/CURES/shingles.html
With me, there is that ongoing battle between l-arginine and l-lysine. When my fever blisters show up, I know I have overindulged in some wonderfully delicious nuts or cornbread.