Most in U.S. take a multivitamin NORTH BERGEN, N.J., May 19 (UPI) -- Americans say they feel more confident about their health when taking a vitamin or supplement, a U.S. survey found. The Vitamin Shoppe's annual survey of 1,000 U.S. adults -- conducted by Wakefield Research -- indicated 93 percent of vitamin takers said vitamins made them more confident about their health, up from 71 percent in 2011. The survey found 63 percent of the nation currently takes a vitamin or supplement, up 3 percentage points from 2011. Seventy-two percent said they took a multivitamin, while 51 percent took vitamin D; 49 percent took vitamin C; 43 percent took calcium; 42 percent took B vitamins; 40 percent took fish body oil; 27 percent took iron; and 11 percent took CoQ10. Fifty-four percent of parents said they regularly gave their children a vitamin and/or supplement. Sixty-four percent of parents said they pack their children a healthy lunch, 89 percent said they give their kids fruit and/or vegetables for a snack and 84 percent said they exercise or were active with their children for 30 minutes or more a day. The survey was taken March 14-20 and has a margin of error of 3.1 percentage points.