Disclosed is a method for removing endotoxin from proteins. Also disclosed areproducts made by using the method.The method may be used, for example, to produce endotoxin-free lactoferrin.Bovine milk-derived lactoferrin may be produced incommercial quantities by the method, and endotoxin-free bovine lactoferrin maybe used for a variety of therapeutic uses, includingimproving wound healing.