Bovilis Guardian is a multiple‑antigen cattle vaccine for healthy pregnant heifers and cows, formulated to help protect newborn calves. It aids in the prevention of neonatal calf diarrhea caused by bovine Group A Serotype G6 rotaviruses, enterotoxigenic E. coli pilus type K99, and enterotoxemia caused by Clostridium perfringens Types C & D, and aids in the control of neonatal calf diarrhea caused by bovine coronavirus. This subcutaneous suspension is 2 mL per dose for straightforward on-farm administration. Available in 20 mL and 100 mL vials, it’s a practical choice among livestock health products for cow–calf operations.