@lindam272 Thanks! I did some searching. Microbion suggests it will help those with MAC, as well: "In addition to CF-related lung infection, there are multiple lower respiratory tract infections and conditions where the presence of microbial pathogens and their associated biofilm contribute to lung function decline. Infectious pathogens such as Pseudomonas spp., Staphylococcus spp., Streptococcus spp., Mycobacterium spp., or Haemophilus spp. may contribute to lung diseases such as non-CF bronchiectasis, bronchitis, community- or ventilator-associated pneumonia, non-tuberculous mycobacterium infection, etc., that are expected to benefit from an inhaled application of pravibismane or other Microbion compounds." https://microbioncorp.com/pipeline/respiratory