That's a hard question. It depends if you have co-infections too. Rifampin is used to treat Bartonella. If you have Bart, you need to take Rifampin with Azithromycin. I have no clue what the dosages are. Your doctor doesn't know?
How long have you been sick?
Here is a site that may help but I don't condone self treating:www.ilads.org/lyme_disease/treatment_guidelines_clearing_ilads.html