Doxycycline is a semi-synthetic antibiotic of a broad spectrum of tetracyclines. Causes bacteriostatic action by suppressing protein synthesis of pathogens as a result of blocking the aminoacyl transport RNA (tRNA) with the "information RNA (rRNA) complex" ribosome.

Teramycin acts depressingly on pathogens of many diseases, as well as biomycin. It is less toxic and longer preserves its action in the body. The medicine is used for the treatment of anthrax, teileriosis, cholera and pasteurellosis and other diseases.