Hi All: My daughter was just prescribed azithromycin. When I googled it to see what the side effects were, the CFF had some information on there that it should not be taken if you have been dx with an NTM. One place I read said that taking azithromycin could increase your chances of culturing an NTM. If that is true, then I can see no harm on her taking it since she already has it. What I am wondering is if it will make it worse for her? Does anyone with an NTM also take azithromycin? Have you noticed an increase of problems with your NTM while taking the medicine? She was prescribed it to help combat pseudomonas along with TOBI. Any information would be appreciated. Thanks.