Notime4lyme said...
I heard that azthromycin interferes with the absorption of rifampin, but I'm not sure if it's true or if it applies to rifabutin..
No, don't think so. I double checked with the drug interaction checker I use.
On the other hand, Biaxin (Clarithromycin) does have an interaction. BUT, the bart guru still pairs them together...so I guess it's not a serious one.
Probably the P450 inhibitor or enhancer issue.