I don't have the book in front of me, but I'm pretty sure Buhner goes into detail in his books about
the exact mechanism of the herbs he suggests and why.
http://www.amazon.com/Healing-Lyme-Disease-Coinfections-Complementary/dp/1620550083/ref=sr_1_1?ie=UTF8&qid=1441733878&sr=8-1&keywords=buhner+bartonella