Im on page with rowingmom. The bigger guns such as rifampin are the only thing working for us. Rifampin/biaxin xl. This is the second round of rifampin from 2 years ago. Cyst busting is rough, i can only give one dose of tindamax one day a month. Zithromax did nothing for my son, and without cyst busting, the 1 1/2 years we were on zithromax for pandas, turned the lyme and bartonella into cyst form. For some less invasive cyst busting and yeast control, I use grapefruit seed extract. Bartonella symptoms have been devastating at times when we weren't using the combinations right for us. You may have to find another combo.