I doubt that what you took had any role in the developement of the cancer cells. I don't see why you should be "forced" into mainstream medicine, though certainly that is your choice to make. While what you took is good, it is far from what I would consider a strong natural/alternative cancer figthting protocol. No way, imo, should you discontinue taking vitamins - but you should make sure that you are taking vitamins that are organic, whole food derived and not the crappy synthetic vitamins and crushed rock minerals found on grocers and pharmacy shelves. You can look around the Cancer support forum to find some strong cancer fighting and immune boosting items and protocols.