Maybe none of these extra things, perhaps just TIME for the chemo to have an impact. Several of the things on this list are clearly without any merit at all, the others have no peer reviewed benefit published in relationship to cancer. Go to quackwatch.com and do some reading. "Slowing" a cancer is a relative term... It's there, it isn't, it's bigger, it's smaller. It's the same size it was last week, month etc. These are all subjective measurements (except for is an isn't there). Bottom line unless someone has peer reviewed evidence of benefit, a substance or any of these biologicals, is a waste of a patient's money. Too many prey on those in dire straights without much hope at the end of their time here. Sites/people selling much of this are not only not helping, they are a testament to how low people will go to separate others from their money.