IL6 and cystic fibrosis: Daily supplementation of pressurized whey (20 g) for 28 days in nine children with CF in a prospective intervention study did not result in significant changes in C-reactive protein (CRP) nor in total white blood cell count, percentage of neutrophils, absolute neutrophil count, whole blood glutathione measures, IL-6 and IL-8 response and hepatic or renal function parameters (26).