All subjects will be recruited from the Shriners Hospitals for Children in Boston. Patients of any age admitted to Shriners Hospitals for Children in Boston that match the following inclusion criteria will be considered for this study 1)burn wound size of at least 20% of the body surface area, 2)requires antibiotic therapy. Exclusion criteria includes: 1) < 20% total body surface area burn, 2)does not require antibiotic therapy, 3)only requires post-operative antibiotic therapy, 4)bowel obstruction, 5)milk allergy.