Colostrum and isolated lactoferrin supplements are frequently compared because colostrum contains lactoferrin as a significant component. However, they are functionally distinct products. Colostrum provides a complex matrix of immune factors (IgG, IgA, secretory IgA, IgM, lactoferrin, lysozyme, growth factors including IGF-1 and TGF-β). Isolated lactoferrin provides one highly concentrated component with standardized dosing. The choice depends on the specific health goal.

| Factor | Isolated Lactoferrin | Bovine Colostrum |

| Lactoferrin content | 100% | 1-2% of protein content |

| Dose certainty | High (labeled mg/dose) | Low (variable by product) |

| Immunoglobulins | Absent | High (IgG 25-40% of protein) |