Nutricillin by Ecological Formulas is a dietary supplement that provides the body with natural ingredients to help boost immune system response.* Nutricillin by Ecological Formulas features three potent ingredients that offer Immune system support.* These are lysozyme, an enzyme found in human breastmilk, colostrum, another compound also found in a mother's breastmilk, and lactoferrin, all of which serve to boost the immune system in doing its work of protecting the body.* Men and women who take Nutricillin by Ecological Formulas as directed may receive a number of health support benefits: • Helps to boost immune system response*.