1. The pharmacological antibacterial spectrum is similar to erythromycin, and the mechanism of action is the same as erythromycin. The antibacterial effect on most Gram positive bacteria is slightly inferior to erythromycin, and the antibacterial effect on Mycoplasma is similar to that of Tylosin. It is also effective against certain Gram negative bacteria, Rickettsia, and spirochetes, and has a better effect on drug-resistant Staphylococcus aureus than erythromycin, chloramphenicol, and tetracycline.
2. Pharmacokinetics: Good absorption after oral administration, reaching the peak blood concentration within 2 hours. Widely distributed in major organs, with higher concentrations in the liver, lungs, kidneys, and muscles, often exceeding blood drug concentrations. Mainly excreted through the liver and gallbladder system, with high concentrations in bile and feces. A small amount is excreted through the kidneys.

Used to promote animal growth, increase feed conversion rate, prevent and treat chronic respiratory disease (CRD) caused by mycoplasma in chickens, porcine epidemic pneumonia (SEP), as well as porcine pleuropneumonia and bacterial dysentery (Vibrio dysentery).