Tetrafid TRV is is a complex antibacterial veterinary product of a wide spectrum of action, containing active substances that exhibit synergistic joint action, providing a wide spectrum of antibacterial activity.

Chlortetracycline hydrochloride is a broad-spectrum antibiotic of the tetracycline group, active against most gram-positive and gram-negative microorganisms, including: Staphylococcus spp., Streptococcous spp., Salmonella spp., as well as rickettsia and some types of mycoplasma. It does not affect Pseudomonas aeruginosa, Proteus, and most fungi.

Chlortetracycline is partially absorbed from the gastrointestinal tract, well distributed in all organs and tissues. The maximum concentration of the antibiotic in the body of pigs is detected 3 hours after administration the veterinary product.

Chlortetracycline is excreted in the urine and faeces.

Tiamulin hydrogen fumarate is a semi-synthetic antibiotic of the diterpene series. The mechanism of its antibacterial activity is to suppress the synthesis of bacterial protein at the level of the 50S ribosome subunit and is highly active against: mycoplasmas, including - M. hyopneumoniae, M. hyosynoviae, M. hyorhinis; brachispir - B. hyodysenteriae, B. pilosicoli; gram-positive aerobes, including erobic cocci - Staphylococcus spp., Streptococcus spp. and anaerobes (Clostridium perfringens).

Thiamulin does not act on bacteria of the Enterobacteriaceae family, including Salmonella spp.

Tiamulin is rapidly absorbed in the gastrointestinal tract and is rapidly distributed in organs and tissues of the body. The maximum concentration is achieved in the body of pigs - 2 hours after administration of the veterinary product and remains at a therapeutic level for 18-24 hours.

Tiamulin is eliminated mainly in feces.

Tetrafid TRV, according to the degree of exposure, is classified as a low-hazard substance (hazard class 4 according to GOST 12.01.007).