Vitamin C in very high doses can also damage viruses, and as soon as the diagnosis is made start 2-4 grams of vitamin C, 3 times a day (or until diarrhea develops). If there is a facility near you which can give it, ask for some intravenous vitamin C, 30-40 grams twice weekly for 2 weeks.
Good nutrition: multivitamin / multimineral supplements and omega 3 fish oils may aid healing and could possibly reduce the risk of post herpetic neuralgia.