ImmuCell First Defense Tri-Shield is an oral gel for newborn calves that provides passive immunity against scours-causing pathogens: Rotavirus, Coronavirus, and K99+ E. coli. This calf supplement supports calf health during the critical early period and fits seamlessly into newborn calf care routines on cattle operations. The 12-applicator pack offers convenient, single-dose delivery—one dose per calf—for straightforward on-farm use. Bovine origin formula; part of trusted livestock health products for improving calf care efficiency.