For the treatment of the clinical signs associated with porcine respiratory disease caused by Actinobacillus pleuropneumoniae, Pasteurella multocida, and Mycoplasma hyopneumoniae susceptible to doxycycline.

Doxycycline is a broad-spectrum antimicrobial, active against a large number of Gram-positive and Gram-negative, aerobic and anaerobic micro-organisms, Mycoplasma, Chlamydiae and Rickettsia.