The immunosupressive part I'm not up on with MMJ, need to take a closer look at it. I agree that it could help reduce pain and aid in treating symptoms of shingles. I do know that shingles tends to follow nerve pathways and possibly the sublingual may have a better response to the viral part of it.
MMJ has been shown to effectively treat herpes so guess it would work with shingles.
https://www.marijuanatimes.org/cannabis-can-t...infection/