Erythromycin Lactobionate injection is indicated for treatment of upper respiratory tract infections (tonsillitis, pharyngitis, sinusitis, secondary bacterial infections). Lower respiratory tract infections (pneumonia, bronchitis, primary atypical pneumonia, Legionnaire's disease). Skin and soft tissue infections (furunculosis, erysipelas). Other infections - diphtheria carriers and cases as an adjunct to antitoxin, syphilis and gonorrhoea (in cases of penicillin allergy), subacute bacterial endocarditis, otitis media.