For shingles and viruses in general I use H. Clark's Lysine & Glutanic acid tea - both stop the virus from replicating. Also echinacea, zinc and high doses of Vit. C and Clark's Zapper. Dr. Richard Schultze also has similar remedies for shingles.
One reason for shingles outbreaks is a lowered immunity and eating aflatoxin, a mold toxin, in foods. Vit C inactivates the mold toxins.
Since a Liver-Flush may lower your immunity I would clear up the shingles first.