While trying to get my CMV under control, I have been doing a lot of research on possibly helpful supplements. There was a surprising amount of actual data on a few of them and I wanted to share this one in particular, which seemed to be the rock star of them all: Lactoferrin: Lactoferrin-mediated protection of the host from murine cytomegalovirus infection by a T-cell dependent augmentation of natural killer cell activity. http://www.ncbi.nlm.nih.gov/pubmed/8920822 This was an *in vivo* study showing that Lactoferrin prevented CMV activity. There are other studies showing that Lactoferrin effectively blocks entry of CMV into new cells when it reactivates. This PDF file discusses it in a bit more depth: http://bit.ly/1FjNGvU So if you are trying to keep your CMV down, this may be an outstanding resource. My research has also revealed the following are significant in beating CMV as well: Monolaurin supplements Vitamin A supplements (careful on this one with dosing, I think I remember reading you can take too much) Quercetin You can google those words and CMV for more info. You can get all of these on Amazon or wherever. @heapsreal figured you'd find this informative.