I used colostrum years ago when I had mysteriously swollen glands every few weeks and felt terribly run-down.
My doc couldn't find any viral issues (doesn't mean I didn't have one, though!) and I tried a lot of different holistic remedies (I worked in supplement retail at the time) and colostrum was the only thing that broke the illness cycle for me. I also used it when healing leaky gut and really got good results.
If you get colostrum through vitacost.com, it's not too $$. I like Symbiotics brand: http://www.vitacost.com/Symbiotics-C...120-Capsules-1