NEW YORK Vitamin D is quickly moving up within the ranks of letter vitamins as the most supplemented letter vitamin, having recently surpassed vitamin B-complex and vitamin E as measured by sales. Indeed, sales of vitamins A & D (tracked together) were up a whopping 75.8% to $85.1 million for the 52 weeks ended Sept. 6 across food, drug and mass (minus Walmart), according to Information Resources Inc.
