Apparently, it's supposed to deteriorate the fat in the arteries and clear them up. In a study, there were 3 men who could not.........shall we say, get firm because of boold not being able to get to the penis. A month or something like that after consuming considerable amounts of garlic (raw garlic by the way) and they were fine. So it must do something. Apparently it does help the immune system but thats all I've heard of that though.