Not sure why you were getting downvoted - I'm of the age where I've had several friends and acquaintances deal with cancer and have had to have chemotherapy. In most cases they were instructed to not take any supplements. They especially don't want you taking naturopathic stuff because that's so poorly regulated and they really have no idea what it is you were actually taking and how it might affect your therapy. My understanding is this is pretty much standard operating procedure.