SUSTAIN III® Boluses deliver 72 hours of sustained-release
sulfamethazine treatment for ruminating replacement calves over one
month old. This FDA-approved oral medication effectively treats
bacterial pneumonia, colibacillosis (bacterial scours), and calf
diphtheria by targeting specific pathogens including Pasteurella spp.,
E. coli, and Fusobacterium necrophorum. The bolus reaches therapeutic
blood levels within six hours and maintains effectiveness for three full
days.

▪Single dose provides 72-hour sustained antibiotic coverage, reducing
handling stress
▪Broad-spectrum effectiveness against common respiratory and digestive
pathogens
▪Ideal for receiving programs to prevent disease outbreaks
▪Fast-acting formula achieves therapeutic levels within 6 hours