Ampicillin 50% wsp is indicated for the treatment of enteritis in calves, lambs and kids caused by E. coli, pneumonia caused by Pasteurella multocida, and infections caused by Salmonella dublin. In poultry, Ampicillin 50% wsp is effective in the treatment of enteritis and airway infections caused by E. coli, Salmonella and Clostridium spp. Ampicillin 50% wsp is indicated for the treatment of dermatitis, caused by Streptococcus spp.; the treatment of enteritis, caused by E. coli, Campylobacter sputorum and Clostridium perfringens type C; the treatment of urogenital infections caused by Corynebacterium spp. and is effective in the treatment of erysipelas in pigs.