I just got wind that Centrum is coming out w/a Low Carb vitamin, its suposed to have more B's, C, E. Its called Carb Assist. The following retailers are interested in carrying it: CVS, Eckerd, Duane Reade, Sams Club and Costco's to name a few.
I do not know the exact date when it will hit the market.
(I found out b/c I work for the company
)