Vitamins

I am sure this has been covered before but in lieu of searching for it I ask the question does anyone know if vitamins have an influence on blood sugar? Took Co-enzyme 10, Gulcosamine chondroitin MSM, general vitamin and cod liver oil pill and after a 40 carb breakfast had a 100 reading. Same breakfast yesterday without vitamins gave me a 152 blood sugar reading. Both pre breakfast readings were the same. Just thought I would throw the question out there.