Treatment and prevention of respiratory diseases caused by microorganisms sensitive to Tylvalosin mainly mycoplasmosis, chronic respiratory disease in poultry, swine enzootic pneumonia, swine dysentery and porcine ileitis. Tylvalosin is a new macrolide antibiotic of high efficacy, up to ten times stronger than Tylosin, resulting antimycoplasmal this superior efficacy. Tylvax® provides faster absorption, better bioavailability and in higher concentrations than those achievable with tylosin, ensuring a specific wide area distribution for pulmonary airways and blood.