A general problem with bartonella is that if you use the wrong antibiotics it tends to just make it flare up and become aggressive.
When I tried taking sodium valproate, the bartonella infection just got worse, but when I added minocycline it died.
Another forum member reported that malarone (atovaquone/proguanil) caused a flare up, but was successful with atovaquone and azithromycin.
https://www.healingwell.com/community/default.aspx?f=30&m=4231426I was also successful with atovaquone and azithromycin.
Similar failures have been reported with disulfiram or kaletra (lopinavir/ritonavir). If you're going to experiment with different treatments for bartonella, make sure you have something that you're fairly sure will kill it, as a back up plan in case things go wrong.