An article by Nathan Geffen, Published: July 20, 2011 and posted at Quackdown!
"The most prolific claim of alternative medicine products must surely be that they boost the immune system. I have a collection of products purchased from Discom making this claim. You'll find immune boosters in almost any pharmacy including, or perhaps especially, the large retail chains. Even big pharmaceutical companies like Boehringer Ingelheim and Cipla sell immune boosters. But what is an immune booster? And do these products really improve your immunity against disease?"
The article continues at: http://www.quackdown.info/article/dont-waste-your-money-immune-boosters/