I used black salve on my shingles on the back of my neck and it started reacting immediately. The salve went in deep so it's taking a longer time to come out than usual. 7 days so far. I had 39 deb temperatures and threw up. The salve has gone after something either cancer or the virus so I just let it go it's thing. I have tried salve on all types of skin issues but it never takes off if the lesion is not cancer or a viral infection. But whether or not it was a good idea to use it on shingles I am not sure yet. I'm going out to buy high potency 25% olive leaf extract today and I've heard eating licorice helps. I'll say how the salve goes later because it's still in there right now.