The present disclosure relates to methods for restoring or augmenting bactericidal activity of an antibiotic in an organ or tissue in which pulmonary surfactant is present. More specifically the present disclosure describes that inhibition of antibiotics due to environmental factors such as the presence of pulmonary surfactant in an organ or tissue such as the respiratory epithelium can be sidestepped or overcome and the effectiveness of the antibiotic in that milieu restored or augmented by co administration of an antibiotic and a lysin.
