I just started taking more vitamins and I was wondering if they may be the cause of my severe itching. I am taking vitamin b6, vitamin b12, omega III, multiple with minerals and vitamin c, and vitamin d. I started on these last week now I am itching all over my face, neck and arms, and its driving me crazy. I have had chronic itch for several years, do not know why, but this itching is different. My chronic itching is usually the bottom of my feet, my tail bone and calves. I am open for any answers.