Gamithromycin

Gamithromycin, sold under the brand name Zactran, is a veterinary medication used for the treatment of cattle, pigs, and sheep. It is a azalide antibacterial related to azithromycin.
It was approved for veterinary use in the European Union in 2008.

Veterinary uses

In the EU, gamithromycin is indicated for the treatment and prevention of bovine [respiratory disease] in cattle, swine respiratory disease in pigs, and infectious pododermatitis in sheep.
In the US, gamithromycin is indicated for the treatment of bovine respiratory disease in cattle.