My husband is always sick each winter, getting every cold and flu that goes around his office. He takes 1/2 tablespoon of Mesosilver every day now and he has not been sick at all. This is unbelievable for him. Mesosilver has really helped his immune system. He says he feels better than he has in a long time. Also, our two teenage sons and I take a tablespoon or two if we feel like we are getting sick, and we stay well. I'm so glad we found out about Mesosilver!