I stopped multivitamins 2 weeks ago and already have some improvement with fewer headaches. Multi vitamins contain metals which can make headaches worse. It is worth a try. According to my Doctor, multivitamins are hardly used at all in Europe after a long term double blind study with tens of thousands of participants showed the group taking multivitamins had poorer health outcomes than the placebo control group. We used to be able to get multivitamins without the metals but can't find them anymore.....jimmy blue