From what I have learned from doctors and other Lymies, if you have had lyme over 6 months the doxy will not work alone. If you get the book by Dr M, why can’t I get better he lists what antibiotics go with Doxy that cross the brain barrier. The bugs by instinct cross the blood brain barrier and go through out your body.
FYI, i use to be on this site answering guestions but moved to the Facebook Lyme Community for many years. Now I am back on the request of an LLND