For the treatment and prevention of infections caused by tylosin and/or gentamicin sensitive microorganisms. Respiratory infections (pneumonia, bronchopneumonia), mastitis, foot rot, erysipelas, endometritis, arthritis, gastrointestinal infections in general. The dexamethasone provides an anti-inflammatory, antistress and gluconeogenic effect. The chlorphenamine, as an antihistaminic, reduces allergic signs.