Hello @chari9 you must be quite miserable with both LP and shingles. The combination must be so difficult! LP is an autoimmune disease but the shingles virus is an opportunistic virus that takes advantage of a lowered immune system. Read through this discussion and see what others have done. I’m sure that members @bustrbrwn22 and @artist01 and @microgirl will step up to help you

You might also be interested in this discussion on shingles. The discussion itself is old but the information doesn’t change.
https://connect.mayoclinic.org/discussion/shingles-3/
Other than the Biotene products, are you being treated for LP?