Treatment of chronic respiratory disease, infectious coryza, swollen head syndrome, fowl cholera, bumble foot infection and other bacterial disorders in gamefowls and poultry caused by organism susceptible to penicillin and sulfa. Also for treatment of pyogenic complications of canine and feline distemper, meningitis, tonsilitis, metritis, genito-urinary infections, peritonitis and mastitis in small animals, dogs and cats.